AZ-900 Exam Cram 2024: Pass Azure Fundamentals in One Day

if the Azure fundamentals exam is your first Azure certification let's face it it can feel a bit intimidating and it

may be difficult to find exactly where to focus as you prepare but what if I told you you could prepare and pass a900

in less than one day if that sounds good you're exactly where you need to be and just like the first edition of my a900

exam cram which had more than half a million views in this 2024 Edition I'm going to optimize your exam prep by

stepping through every line item mentioned in the exam syllabus and calling out key characteristics of asure

services and Concepts to ensure you're better able to pick the right answer out on exam day and this is more than just

an exam prep course I actually have two additional resources to help get you across the Finish Line all in less than

a day stick with me and I'll show you the way

[Music] welcome to the 2024 edition of my a900 exam cram updated from the original

release to cover Microsoft's latest exam syllabus and keeping with the original covering every topic on the exam

syllabus so how current is this exam cram well this course includes January 2024 updates and should be current

through the 2024 calendar year however every now and again Microsoft throws us a surprise so be sure to take a look in

the video description for any minor addendums or add-ons I may have published to cover minor

changes this course was recorded in January 20244 an a900 consists of three domains

domain one is describ cloud Concepts domain two describe Azure architecture and services and domain three describe

cribe Azure management and governance you'll find a PDF copy of this presentation available in the video

description intended for you to download and use in your exam preparation and the chapters within this course should

appear automatically on the timeline but just in case you'll find a table of contents that's clickable in the video

description so you can hop forward and back in the video as necessary as you prepare and to test your exam Readiness

I've also provided nearly 120 practice questions in a free quiz you can use to assess your Readiness for exam day using

the resources I've provided you here I find most candidates are ready to take this exam and pass on their first try in

less than one day and to take just one more minute to wrap up that topic of expectations let's look at experience

briefly so Microsoft has three levels of exams fundamentals where it's expected that you're just getting started the

associate level or role specific exams where there's an assumption of two years of hands-on experience more or less and

the expert level exams where there's an expectation of 2 to 5 years experience as well as the associate level

certifications and so where you are is that fundamentals level exam so what that means in terms of exam

specifics you're looking at roughly 60 Minutes in length 40 to 60 multiple choice

questions and really lightly technical focusing on feature and concept description but what that means if we

just look at the verbs that are used in the description of the exam objectives if we look at the domains themselves

you'll notice the verb describe used a lot so what does that mean it means it focuses on basic knowledge of Concepts

and Azure Services it is not a Hands-On exam and now that that we're clear on the technical level let's talk about

exam preparation because there's no award for the longest study time and there's no need for a fundamentals exam

to spend more time than necessary so I want to talk to you for just a minute about my recommended exam preparation

strategy that has worked for tens if not hundreds of thousands of exam candidates to this point in

time and when it comes to exam preparation research shows everyone benefits from using a variety of sources

for exam prep which is what makes this video course the perfect place to start it covers

every topic in the exam syllabus in the order presented in the syllabus at the level you need for exam day some written

content alongside is also going to be useful to review on your own or as part of a live quiz exercise find a partner

and have them quiz you on the topics preferably in random order pair that with a practice exam so

you can ensure that you're ready for exam day I have a link in the video description to a free quiz of more than

a 100 questions that's more than you need to prepare for the big day targeted reading is also helpful and you can mix

and match and repeat these techniques based on what feels right to you when it comes to targeted reading though don't

overdo it you can use Ms learn for topics you're struggling with but don't use it as a resource you read end to end

you could spend days preparing for an exam that most complete in less than 8 hours of preparation and at the end of

the day you want to balance being as efficient as possible with your time with understanding the concept studies

show that understanding before you memorize greatly improves retention but understanding is also what your

employers expect and what's going to serve you best on the job so definitely understanding these Concepts is the

right thing to do and with the PRX out of the way let's dive into the technical content we'll

start with domain one which is describe Cloud Concepts and the syllabus carves domain one into three

parts describing cloud computing describe the benefits of using cloud and describing the cloud service types so

starting with 1.1 describe cloud computing we'll talk about the description the definition of cloud

computing from two angles we'll look at the Shared responsibility model something you should know well for this

exam Cloud models including public private and hybrid we'll look at appropriate use

cases for each Cloud Model so really their advantages and where they apply we'll describe the consumption

based model this is really about budgeting and pricing and we'll dig into Cloud pricing models just a bit and

we'll finish up with a description of serverless and the best way to understand serverless is to compare and

contrast serverless with platform as a service so the definition of cloud computing we're going to start with the

nist the National Institute of Standards and technology definition of cloud computing which is a model for enabling

Universal convenient OnDemand network access to a shared pool of configurable computing

resources like Network server storage apps and services that can be rapidly provisioned

and released with minimal management effort or service provider interaction so I'd call this the industry definition

of cloud computing the Microsoft has their own formal definition for this exam and that is cloud computing is the

delivery of Computing Services over the Internet very simple right it expands traditional it offerings to include

services like The Internet of Things machine learning AI it basically enables organizations to quickly expand their

compute footprint without the need to build their own Data Center so put these two definitions together

and you get the gist of cloud computing while we're going to go deeper on the shared responsibility model here

shortly I wanted to touch on it at a high level just to introduce you to the concept the shared responsibility model

really lays out customer responsibility versus cloud service provider responsibility Microsoft in this case in

different scenarios so with on premises it's quite simple the customer is responsible for everything from the

application down to the wire and then as we move through the cloud computing models from infrastructure as a service

to platform as a service and then software as a service you see that the CSP is taking on successively greater

levels of responsibility and we'll go a bit deeper on that topic

shortly now the burning question is there better security in the cloud I think has been pretty well answered at

this point in the industry and the answer is just generally yes if we look at security in an on premises scenario

what we see is that security is both challenging and often underresourced so we see some responsibilities met some

partially met and some unaddressed simply because the organization doesn't have time and resources to do

so and when organizations move to the cloud what we see is they immediately are able to shift some commodity

responsibilities to the Cs P to Microsoft and reallocate their resources to more business

advantageous activities so it's really shifting not only responsibility but risk to the

CSP so now we're going to talk through the cloud models and the expected benefits and when we move to cloud

computing there are a few benefits we expect right out of the gate we expect cloud is costeffective it gives us

Global presence it's more secure than our traditional on- premises data center quite typically scalable elastic always

current so in other words we're handing over a lot of those operational responsibilities we transferring some of

that risk to the cloud service provider to Microsoft in this case so the business can focus on

Innovation the first model we'll touch on is public Cloud so this is where everything runs on your Cloud provider's

Hardware so everything in Azure in this case advantages in this case include scalability agility pay as you go no

maintenance and low skills required for entry basically you can use this model to skip building your own data center

the public cloud model is going to be very common with startups for example that don't already have their own data

center then we move into private Cloud a cloud environment in your own data center where you as the customer are

responsible for the entire stack all the way down to the wire there are advantages here Legacy

support for example so if we have a legacy application that's not yet ready for the cloud we can keep that in our on

premises data center it gives us 100% control this can be handy in compliance scenarios for sure but we see that

private Cloud happening in scenarios where more control is necessary always up to date is fantastic until you need

to run a legacy version of Windows or Linux or a database management system that's not supported in the cloud and

then we have the hybrid cloud model which allows us to blend public and private so when we have a scenario that

requires that Legacy support and additional control we can run in our private cloud and when we want modern

and automatically scaling and always up toate we can go the public route so it gives us the flexibility to support our

Legacy scenarios our compliance scenarios and to leverage the CL allowed for its scalability when we can that

makes hybrid a very common model in large Enterprise scenarios next we're going to touch on some foundational

Cloud Concepts beginning with economies of scale economies of scale refers to the cloud service providers ability to

do things more efficiently or at a lower per unit cost because they operate at a larger scale

because Microsoft can buy more servers and more storage than the average business they can deliver compute at a

lower cost than the business might be able to provide on their own next we have capital

expenditure often called capex for short capital expenditure is the spending of money on physical infrastructure upfront

as a business would do with a legacy on premises data center we ju toose or compare capital

expenditure to operational expenditure often referred to Simply as Opex this is spending money on services or products

now and being build as you go this is associated with public Cloud consumption a pay as youo model as with Microsoft

Azure so you'll definitely want to remember that Opex is associated with cloud and capex is associated with

investment in on premises infrastructure the cloud increases OPC spending and it reduces Capac spending

so if you keep those two concepts straight that's about all you should need for the

exam and the consumption based model refers to paying for what you use typically per unit of time or capacity

it might be per minute per gigabyte per execution in some cases so how it's built quite typically depends on the

service for example virtual machines are going to be build per unit of time storage is going to be build per

gigabyte as your functions would be bu build per execution next we have the fixed price

Model this is where you provision resources and you pay for those instances whether you use them or

not and in cases where you know you're going to use what you're provisioning it does offer an advantage in that it

ensures predictable cost for your cloud services for example with some Azure AI Services you can pick a commitment tier

that comes at a fixed cost for several services next we have serverless architecture this is a cloud computing

execution model where the cloud provider dynamically manages the allocation and provisioning of

servers it's hosted as a pigo model based on use the resources are stateless the

server ephemeral and they're often capable of being triggered I call those out I want you to remember those

keywords if you see stateless ephemeral triggered on the exam server lless is quite likely the answer a good example

here of serverless is function as a service that would be Azure functions so let's talk about the

difference between serverless and platform as a service in terms of responsibility when we talk about

platform as a service in some depth just a little later you're going to think that PA and serverless sound very much

alike so let's talk about how they're alike but also how they are different so with p and serverless developers have to

write code and there's no server management really that tier is managed by the cloud service

provider but how are they different well in the P environment you have more control over deployment in serverless

you have less control over deployment on the path side the application has to be configured to

autoscale where on the serverless side the application scales automatically you have less control control but because

the scale is automatic you don't really care that you have less control and on the path side the

application takes a while to spin up where on the serverless side application code only executes when it's

invoked let's take a look at some Azure cloud services that fall into the serverless

category three that come immediately to mind are Azure logic app Azure functions and Azure event grid one I

think you're quite likely to encounter in your Cloud career is azure logic app this is a cloud service that helps you

schedule automate and orchestrate tasks business processes and workflows the magic of azure logic app

really comes in its connector Gallery you can choose from a gallery of hundreds of pre-built connectors for

Microsoft and thirdparty services so whether you want to integrate with a Microsoft service like Office 365 or a

thirdparty service like service now logic app quite likely has a connector you can use to expedite the

process logic app and its connectors are actually the foundation for power automate what was formerly known as

Microsoft flow in fact why don't I give you a quick tour of those logic app data connectors so you can have a look

firsthand and we'll switch over to the Azure portal and I'll click on logic apps and I'm going to open an existing

logic app created previously so we can have a look at that visual authoring experience and get a shot of those

connectors so the visual authoring experience here is not entirely unlike what we'd see in Microsoft power

automate formerly Microsoft flow after all power automate is built a top as your logic apps we simply in logic apps

have a bit more control we are a technical author here where power automate assumes a what they call

citizen developer somebody a bit less technical on the whole but let's get to why I brought you here those connectors

so anytime I'd like to make a connection to another service I can choose my action here and then find actions that

will connect me to those other services for example if I just type office I can see connectors for Office 365 what we'd

call Microsoft 365 now quite typically and you'll notice that the group by connector box is checked so I can see

the actions that relate to each of these connectors and if I scroll down you'll see multiple connectors related to to

Office 365 in fact if I type Azure you'll see connectors related to Microsoft Azure services and a variety

of path Services as well as VMS but it's not just Microsoft Services you can find in the hundreds of connectors here if I

type Adobe for example you'll see multiple actions related to various Adobe connectors connecting to Adobe

Services of various sorts and that's the power of logic apps we have that API type connectivity with great

configurability without the need to write our code from scratch moving on with serverless

Computing options we have Azure functions this is an event driven compute on demand experience that

extends the existing Azure application platform with capabilities to implement code triggered by events occurring in

Azure as well as on premises systems Azure function supports a number number of programming languages but the

triggered by events phrase there is key why is that important well it means that Azure functions doesn't have to

pull remote systems to see if an event has occurred it can be triggered by those remote systems those applications

those remote services and that enables Microsoft to billis per execution rather than by runtime which makes Azure

functions on the whole very inexpensive rounding out our look at serverless we have Azure event grid this enables you

to easily manage events across many different Azure services and applications because once a subscription

is enabled event grid will push events to a configured destination push is the keyword here if you see serverless and

push in a question event grid is likely your answer but let me give you a bit more information so on the left side we

have event sources so we might have events from iot devices or in machine learning or our containers and event

grid will push those events over to event handlers where we can take action on those events like an Azure functions

or logic app for example it's what we call implementing a pub sub model an app or service is

reacting to an event when you're creating an application model like this it's often called reactive

programming but with event grid it makes it easy for any developer to utilize the push model instead of an inefficient

pull model where you have to reach out and pull on a recurring basis across your serverless architecture so that's

what event grid and Azure functions have in common so in Azure functions we talked about the event-based trigger and

in event grid we're talking about a push model which means in either case neither of these Services has to do an

inefficient polling mechanism that would cause us to have to be build by time so like Azure functions event grid is pay

per use and that's a wrap on subdomain 1.1 now we're going to move into

1.2 describe the benefits of using cloud services and here we're going to focus on the benefits of high availability and

scalability reliability and predictability security and governance and manage manageability so

we see that describe verb I mentioned again it's high level knowledge right but our Focus here is high availability

reliability and predictability security and governance and manageability so you want to know the difference between all

of these terms on exam day so we'll talk about these Concepts in exactly the order they appear in the

syllabus starting with availability so availability appears obvious on its face I want to cover one small Nuance with

you so avail ability encompasses the availability of infrastructure services or

applications and it's generally expressed as a number of nines you'll hear three nines four nines or five NES

of availability and where the Nuance comes in is availability and uptime are often used interchangeably but they're

not the same thing uptime simply measures the amount of time a system is running in the IAS world for example I

can have a virtual machine that's running for a week but maybe my applic my website Etc that's running on that VM

is not available for 5 or 6 hours of that time so I might have had 59 of uptime but I certainly didn't have five

NES of availability in that situation then we have scalability so scalability speaks to the

ability of a system to handle growth of users or work it refers to the ability of a system or a service to handle more

traffic to scale essentially whether that's scale scaling up or scaling out and we'll talk about scaling up versus

scaling out a bit later in this session as well next we have elasticity so unique from scalability

elasticity is the ability of a system to automatically grow and Shrink based on app demand it focuses on the ability of

a system or a service to scale quickly to spikes and demand and I find generally speaking folks get scalability

and elasticity confused use so let's break these down and just compare the two so it's Crystal Clear for you on

exam day so rapid elasticity and scalability are core benefits of the cloud it allows a customer to grow or

Shrink the it footprint as necessary to meet the business needs without excess capacity these two are related but

they're unique so elasticity again speaks to the ability of a system to automatically grow and Shrink based on

app demand when we're talking about elasticity you'll often hear about the ability to rapidly provision and

deprovision those capabilities scaling out and scaling in meaning I'm adding more instances to scale out and when my

demand shrinks I'm scaling in I'm removing those excess instances so I don't have unnecessary

spend scalability on the other hand is not speaking to my ability to deploy those additional instances scalability

is about the ability of a system to handle growth of users or work as demand increases so that's really about making

sure that I have provisioned the right virtual machine skew or I've selected the right service tier in a p service

like Azure database for example another term that may come up is agility so agility speaks to the speed and ease of

allocating and deallocating resources so I think of agility as our capability to react and execute quickly

in the cloud versus what it takes on premisis so on Prem if I need to roll out additional compute capacity it means

I need to buy and configure additional servers in the cloud it means I am pushing a button to deploy additional

virtual machines in an IAS scenario so the cloud is agile because my response can be measured in minutes where my

response in the on premises data center can be measured in days or weeks

and this allows for vast amounts of computing resources to be provisioned very very quickly that's agility

provisioning a set of 10 VMS and a scale set for example a few of these terms really fall into the categories of high

availability and disaster recovery and again while you need to be able to describe these you need to know the

difference between these terms on exam day which is really a matter of scope for the most part so fault tolerance so

fault tolerance speaks to the ability of a system to handle faults in a service like power Network or Hardware failures

it generally refers to component level failures so when we're thinking of fault tolerance we're thinking about redundant

power supplies highly available discs in a server on the other hand High

availability is about the ability to keep Services up and running for long periods of time so high availability has

a service or application level Focus but it generally refers to service level failures next we have disaster

recovery so the focus of Disaster Recovery is on the ability to recover from an event which has taken down a

cloud service It generally focuses on a service or even a sight level failure and continuing down that list

reliability so reliability speaks to the ability of a system to recover from failures and to continue to function and

you can think about reliability in human terms when someone is reliable you can count on them and that's really what

reliability means in a technical sense but the way Microsoft looks at reliability is really from two angles so

they'll talk about the principles of resiliency and availability so resiliency aims to

return an application to a fully functioning state after a failure occur URS and the goal of availability is

consistent access to the application so if we think about that in human terms a person is said to be

resilient when they can bounce back from failure quickly and that's what resiliency is about in technical terms

in the cloud and availability again is about consistent access to our application or service it's not uptime

of the underlying system it's access to the service that we're delivering we're get get into some fancy words here

aren't we so the next one is six syllables predictability but this one's a pretty simple concept Azure enables

Solutions with predictable cost and performance to say it another way predictability means the level of

service and performance and the associated cost are known to us in advance and I can't overstate the

importance of that when you are in your job recommending solutions to your managers to your executive stakeholders

they are absolutely worried about the size of the check they're going to be writing in the cloud so predictability

is key for you and for them so let's shift gears and talk security and governance when it comes to security

we're focused on protection of customer data whether that's access control or encryption protection of our Cloud

applications and protection of the infrastructure it rides on and this comes down to the dueling element of

control and responsibility infrastructure is a service IAS gives the customer more control versus

platform or software as a service Pas or SZ but it also places more security responsibility on the customer to tweak

that line from Spider-Man with great control comes great responsibility right and all models in Azure have built in

distributed denial of service or dos protection from the Azure DDOS service from the free tier which covers every

component in Azure invisibly with no action on your part now the standard tier provides enhanced DDOS mitigation

features to defend against DDOS attacks and it also includes more logging alerting and Telemetry that's not

included in the free basic tier that's present by default now let's talk governance so

governance really speaks to the rules and policies that guide an organization Cloud operations this ensures data

security helps us manage risk control cost and improve efficiency I think of governance as the guidance and guard

rails that ensure we're as secure consistent and efficient as possible and the cloud features and

Azure are designed to support both governance and compliance out of the box for example there are deployment

templates available that help ensure deployed resources meet corporate standards and regulatory requirements

and depending on the model we're dealing with software updates may be applied automatically by the cloud provider

which helps us with governance and security it transfers some of that responsibility and risk to the cloud

service provider to Microsoft in this case you'll also want to be aware of the Microsoft cloud adoption framework which

provides guidance designed to help organizations Implement Business and Technology strategies successfully in

Azure but on the topic of governance the cloud adoption framework includes a governance model based on the five

disciplines of cloud governance we never know exactly what's going to come up on an exam but that's the sort of highlevel

information I could easily see popping up on a900 and on that topic of security which

we touched on a moment ago the shared responsibility model really explains who is responsible for secur Security in

each model and scenario and we'll dive into that but Security on this exam is going to be more about the what and the

who of security and less about how it's implemented it's not a Hands-On exam then to wrap up section 1.2 let's talk

about manageability and when it comes to manageability there are two aspects of manageability for the cloud in the

Microsoft story and it's really about the what and the how so when we think about manageability

of the cloud there's automatically scaling resource deployments based on need deploying resource based on a

preconfigured template which makes manageability easier we can consistently deploy we can then monitor the health of

resources and automatically replace failing resources but also receive automatic alerts based on preconfigured

templates that really answers the what and then really speaking to how you're able to manage your Cloud

environment and your resources through a web portal using a command line interface using apis through thirdparty

or command line tooling custom scripts or using Powershell that speaks to the how and that brings us

to subdomain or section 1.3 describe cloud service types so we're going to look at infrastructure as a service

platform as a service software as a service and we'll talk through appropriate use cases of these cloud

service types yes this is finally the spot where we're going to walk through the shared responsibility model now

we're going to move into a comparison of cloud models and services which you can expect will Factor prominently on the

a900 exam and we're going to focus on the core three of infrastructure platform and software as a

service and the most common Cloud models of private hybrid and public and the best way to approach

these for the exam is to examine them through the lens of the shared responsibility model in the beginning

responsibility is easy because on premises responsibility is 100% yours on premises the customer owns 100%

responsibility all the way down to the wire and as we look at our Cloud models across infrastructure as a service

platform as a service and software as a service we see that the cloud service provider or

CSP assumes increasing levels of responsibility and if we overlay models here private Cloud happens here on

premises and hybrid Cloud would then extend from on premises into the cloud and using infrastructure as a service at

minimum generally with some sort of sight tosite VPN connectivity that connects our on- premises data center to

the cloud and that connectivity could be as simple as a VPN Appliance connecting to a VPN Gateway in azzure or it could

be something more sophisticated and Enterprise friendly like Azure express route which often uses MLS not details

you have to be too worried about for an Azure fundamentals exam just know that in the hybrid Cloud we're extending to

is at minimum and connected by that sight to sight VPN and in terms of responsibility the

CSP is providing the building blocks networking storage compute the facilities the hardware and the staff to

manage it all the customer becomes a consumer and is free to focus on innovating in their business and some of

this utility functionality is pushed off to the CSP all your major csps have an is offering in Azure that is azure

virtual machines if you're familiar with Amazon or Google Cloud platform they have ec2 and compute engine respectively

but as your virtual machines will be your focus for this exam and you'll you also need to know

the common iaz use cases when to use Virtual machines a few use cases come immediately to mind like testing and

development because VMS are an easy way for test and Dev teams to deploy and delete VMS when they no longer need them

so they can iterate through test Cycles without waiting on infrastructure teams to deploy physical or virtual machines

in a private Cloud which is really the problem we've seen historically even in a private cloud and environment it can

take days or weeks even to get vmms deployed and when running applications in the cloud we can gain financial and

Technical benefits When an application might need to handle fluctuations in demand because in the cloud we're paying

by the minute so we can shut down BMS when we don't need them quickly start them up when we see an increase in

demand and pay only for the resources we use so this is that shift from capital expenditure to operational expenditure

the shift from capex to Opex budget and when extending your data center to the cloud the hybrid Cloud scenario we can

extend the capabilities of our on premises Network by creating a virtual Network in Azure and adding VMS to that

virtual Network and the real benefit of that hybrid Cloud scenario is it makes it easier and less expensive to deploy

than it is on premises and finally during Disaster Recovery the cloud gives us a backup

data center without having to build and provision resources in our own backup data

center Azure becomes our push button Dr site we can use Azure site recovery to replicate virtual machines to Azure and

then we can have push button automated VM spin up and shut down in the case of a

disaster and in the case of azure site recovery you're going to pay a fee for the privilege of replicating your VMS

into Azure so you can spin them up on demand but it's certainly much less in terms terms of cost than building and

running your own Disaster Recovery site and in platform as a service the customer is responsible for deployment

and management of their apps while the cloud service provider manages provisioning configuration Hardware the

operating system the bulk of the stack as you can see here and there are a number of cloud

services that fall into the P category Azure SQL database the API manager M offering as your app service just to

name a few there are many more and you won't be expected to know all of them and certainly not exhaustively but you

will be expected to be familiar with some common platform as of service use cases when to use platform as a service

so a development framework P provides a framework that developers can build on to develop or customize cloud-based

applications it's a a framework it lets developers create applications using built-in software components they're

focused more on developing for business value rather than utility functions Cloud features like scalability high

availability multi-tenant capability are all built in reducing the amount of coding that the developers have to worry

about the bottom line is it reduces developer effort and increases solution quality on the

whole we also see platform as a service Factor prominently in analytics or business intelligence basically tools

provided as a service with P allow organizations to analyze and mind their data find insights and patterns and

predict outcomes it improves forecasting product design decisions investment returns a number of business

decisions bottom line it simplifies data analysis and it improves business

outcomes so the theme you should be noticing here is the reduction in upfront investment and the reduction in

the need for the customer to worry about utility functionality it's a win on two front in

that customers can save money through that pay for what you use model and they have more time to focus on delivering

business value to their customers and nowhere is that more evident than in the software as a

service model so here the customer just configures the features by and large the CSP is responsible for management

operation service availability now the customer has some responsibility in access management and data

recovery it's not entirely on the CSP to manage this but you see at worst the customer has minor shared responsibility

here but not sole responsibility for almost anything and even if you're fairly new to the cloud and to

technology on the whole you'll recognize some of these Services Office 365 service now

Salesforce Office 365 is now called Microsoft 365 I wanted to call out office just to make sure that everyone

recognizes this because Office 365 is what originally in a cloud sense got large

numbers of small businesses out of the business of managing their own email and I don't think I know anyone

who misses having to manage their own email servers as was the case with IAS and P You're expected to be familiar

with common use cases of software as a service and there are are several for example email and messaging

as I said nobody misses hosting their own email servers business and productivity applications SharePoint for

document collaboration finance and expense tracking bottom line these are all

important utility functions but they're not core to the company's purpose so perhaps more than anything

SAS enables companies to securely and reliably Outsource a variety of utility fun function so they can focus on

Innovation and revenue generation and that's a wrap for domain 1 which brings us to domain 2 describe

Azure architecture and services and in domain two we'll be covering the core Architectural

Components of azure the compute and networking Services Azure storage Services as well

as identity access and security we'll start with 2.1 which is described the core Architectural

Components of azzure and we're using that verb described throughout whether we're

talking about regions region Pairs and Sovereign regions availability zones data centers resources and resource

groups subscriptions management groups and the resource hierarchy we'll start at the

top of the hierarchy and work our way down beginning with Azure geography so an Azure geography is a discrete Market

typically containing two or more regions to facilitate Disaster Recovery that preserves data residency and our

compliance boundaries and based on your business needs you can pick the Azure geographies that work best for your

organization you'll find Azure geographies around the world including North America Europe

Australia China is its own Sovereign region Africa and South America and you want to choose your

geography based on the location you need but you'll also want to look at the regions within the geography so a region

is a set of data centers deployed within a latency defined perimeter and connected through a dedicated Regional

low latency Network so essentially you're choosing the right locations within the region based on where your

company conducts business so whether that's in China or Europe or North America you're picking the part or parts

of the country where your customers are located for example so you can provide the best user experience and a moment

ago I mentioned Sovereign regions we should touch on that briefly so a sovereign region is a special region you

might need for compliance or legal purposes China is one of those Sovereign regions the US federal government also

has their own Sovereign region these are operated by special trustees and they provide physical and logical

isolation and you'll also want to choose your geographies and regions based on the services that are available so I'd

like to just take you to a page and have a quick look at the available Azure geographies and how you can find the

service availabilities in each of these geographies and this will help us put a finer point on it so if you go just

search the internet for Azure geographies it will bring you to this page where you can choose the Azure

geography that meets your needs and so if I click on geographies it shows me the geographies available in this table

and you see the check box there that says show nearby geography so naturally one of the elements in our decision

process is to find geographies that are close or geographically proximate to our audience but that's certainly not the

only decision criteria so I'll hop over to region and you'll notice here they mention some of the decision criteria

that factor in choosing the right region like data residency you may have compliance requirements that demand your

data is stored housed in a specific geographic location typically that's at a country level but it's an option and

then you see service availability so it's important to note that not every Azure service is available in every

region this tends to be particularly true of newer services that are added to the platform and certainly you will find

that the prices are not the same in every geography in every region so you'll want to check the prices as well

if you're flexible on location you can look at the price of a service on the east coast of the US versus the West

Coast for example and we should also talk about region

pairs a region pair defines a relationship between two Azure regions within the same geography for Disaster

Recovery purposes now a couple of things are true here so you'll find that the region pairs tend to be at least 300 M

apart for example East us and West us or a region pair so that 300 plus miles is chosen by

Microsoft to make sure that we have region pairs with locations that are far enough apart that both are not impacted

by the same disaster for example and those are the two most important elements to remember for the

exam those region pairs tend to be location 300 plus miles apart and they are chosen by Microsoft that's not your

decision and the services in the platform form such as Azure storage for example will have some

automatic failover behaviors configured for when we have a region outage there'll be some data replication

automatically configured in the background assuming you choose the right service tiers and also some automatic

change in endpoint availability where you'll call to access the service based on that Regional outage now that doesn't

mean you may not need to factor that in when you develop your application but it does mean you have a Dr Data Center

without having to build build your own Dr Data Center and moving on when we think about services and how we manage

and secure them you'll need to be familiar with management groups subscriptions resource groups and the

resources they contain so to give you a look hierarchically before we look at their function you have at the top level

of management group which contains one or more subscriptions subscriptions contain resource groups and within a

resource Group we have have the resources themselves like a virtual machine for example now let's talk about

the purpose the function of these four components starting with management groups as you saw in the hierarchy

diagram management groups provide a level of scope above subscriptions and each directory is given a single top

level management group called The Root Management Group by default that management group is a boundary for

management as the name implies and for application of policy Azure policy being how we would automate

the application of our management requirements next we have subscriptions a subscription is a logical container

used to provision resources in Azure now why would I create multiple subscriptions you want to be familiar

for the exam we'd use this when subscription limits are reached we'd use this to support different payment

methods whether we're talking about currencies or maybe I have reservations that give me some long-term commitments

in one subscription and perhaps in another I'm going to Simply pay as I go month to

month and also to isolate resources between departments between projects between regions or geographies

for compliance purposes whatever reason I need isolation subscriptions are going to be one option for providing that

isolation and next we have resource groups a resource Group is a container that holds related resources for an

Azure solution it's used to group resources that share a common resource life cycle such as the components that

combine to form a virtual machine which would include the VM its network adapter its storage there'll be multiple

components in there and then we have the resources themselves a resource is an entity managed by Azure like a virtual

machine a virtual Network or a storage account now since virtual machines are the most common use case let's take a

quick look at a resource Group for an Azure VM just to give you a visual confirmation of what that actually looks

like so I'll just switch over to the Azure portal I'm at portal. azure.com I'm looking at a specific virtual

machine and if we zoom in here you can see the resource Group so I'll click on that Resource Group and you'll see here

the resources associated with this virtual machine you see the virtual machine you see the public IP address

the network security group that gives us security at the network level the virtual Network the network interface

the disc the storage for this VM so naturally all of these elements share a common life cycle when you delete the

virtual machine all of these resources should be deleted with it and so this Resource Group encapsulates these

resources and when I click on delete Resource Group I'm going to get a prompt here to show me everything that will be

deleted when I delete the resource Group essentially all of those elements all of those components of the virtual machine

that share a common life cycle and all I have to do is go down here and type the resource Group name to confirm and hit

delete and those resources will be deleted in their entirety let's take a quick look at that

resource hierarchy by function starting with the Management Group the Management Group can be used to aggregate policy

and initiative assignments via Azure policy so think policy-based management that's really automating our desired

configurations enforcing our requirements through policy really automating that step the Management

Group can contain multiple subscriptions and in fact all new subscriptions are added to a special Root Management Group

by default next we have the subscription and a subscription is a

unit of management billing and scale within Azure it serves as a management boundary for assigning policies for

governance and potentially for isolation any of these based on our requirements and then we have the resource Group and

resource groups are containers that hold Resources with a common life cycle as we saw with the components of a virtual

machine and then we have the resources themselves like that virtual machine and resources can be contained within

exactly one Resource Group and a resource Group can live with within exactly one subscription so it's a on

toone relationship in each case so this is really logical architecture let's shift to the physical for a moment and

talk about availability zones availability zones are unique physical locations within a region with

independent power Network and cooling availability zones are comprised of one or more data centers and they're

tolerant to Data Center failures via redundancy and isolation so when we configure

availability zones for example with our web application here that is load balanced we have availability zones that

give us redundancy resilience against physical failures so we're considered to be Zone redundant and continuing that

discussion of the physical let's talk about Azure data centers these are physical buildings that contain

thousands of servers and other Hardware to provide Cloud Computing Services Azure data centers are located all over

the world and they're organized into regions which we looked at previously they are designed to be secure reliable

efficient leverage economies of scale and of course their multi-tenant for the exam do remember that a data center

consists of multiple physical buildings and it has redundancy throughout whether that's Powers servers internet service

provider connections Etc and that does it for 2.1 bringing us to section 2.2 describe asure compute and networking

services so here we'll talk about compute types including containers virtual machines and Azure functions

we'll look at virtual machine options including Azure VMS VM scale sets availability sets and Azure virtual

desktop we'll look at the required resources for virtual machines so the components that comprise a VM for

example and describe application hosting options including web apps containers and virtual machines these really add up

to the compute options both IAS and PAs that are available in azure and we'll also take a look at the

virtual networking options that support compute including Azure virtual networks subnets peering DNS as well as VPN

Gateway and express route what these last two have in common is that they support hybrid Cloud connectivity they

connect our on premises data center to Microsoft Azure and we'll take a look at public

and private endpoints and again you notice that describe and Define are the verbs here so it's really just high

level familiarity so we're going to start with a look at our VM compute options

including Azure VMS Azure container apps Azure kubernetes service Azure virtual desktop

and Azure container instance technically containers are smaller than VMS multiple containers run

on a VM but the VM is the container host so at the end of the day these are all VM compute options of

fashion let's start with Azure VMS which are server virtualization it's compute on demand without the need for Hardware

purchase and there are a couple of variations you'll want to be familiar with the first of which are virtual

machine scale sets so VM scale sets allow you to create and manage a group of identical load balanced

VMS the number of VM instances can actually automatically increase or decrease in response to demand based

based on a schedule and because it says based on a schedule that tips us off that the focus here is scale or

scalability and capacity rather than elasticity which would focus on rapid scale and then we have virtual machine

availability sets which help build a more resilient highly available environment by staggering VM updates and

ensuring varied power and network connectivity so the focus of availability sheds is resiliency

availability and one can certainly argue that load balanced VMS in a group also help us with availability but that's not

exactly the focus there so you can see how these two are complimentary and their purpose is baked into their name

virtual machine scale sets focus on scale while availability sets focus on resiliency on

availability and availability sets focus on that availability through two mechanisms fault domains and update

domains and you'll want to be prepared to describe the difference between the two for for the exam so let's take a

quick look starting with update domains which allow you to apply updates while knowing that only one update domain

grouping will be offline at any given time and then we have fault domains which group our VMS by Common power

source and network switch by default an availability set is going to split your VMS across up to

three fault domains continuing with our compute options we have Azure virtual desktop which is a desktop app

virtualization service that runs in Azure functionally the service enables it Pros to create Windows 10 and windows

11 virtual desktops in Azure in fact if you get a question on the exam that mentions vdi or virtual desktop INF

structure Azure virtual desktop is almost certainly going to be your answer next in our compute options is

azure container instance which runs Docker containers on demand in a managed serverless Azure environment

and in fact containers on demand is one of the key elements you want to remember for the exam the other is that this

solution is great for any scenario that can operate in isolated containers without

orchestration now for organizations that need greater functionality including orchestration they would move to Azure

kubernetes service which is a hosted kubernetes service where Azure handles the critical tasks like Health

monitoring and maintenance for you you basically pay for the agent nodes within your clusters but not for the Masters

the management cluster that's free in the free tier now if you'd like a financially backed SLA then you pay a

few cents per hour for cluster management that's what you do for a production scenario and this addition of

a standard tier is a fairly recent development in the Azure world I'm not sure if it will show up on the exam but

I wanted to call out that wrinkle just in case it does the syllabus also mentions that you should be aware of the

components required in a virtual machine so in an Azure VM you need a virtual dis you need a network for that VM to

connect to so it can communicate you're going to need a network interface a virtual network adapter or a Nick as

it's called a network security group which provides some network security at a port level and you may need a public

IP address in certain scenarios like connecting to that VM over the internet and while the exam doesn't

expect hands-on experience it's all conceptual it may help you to see this in action so we're going to take a quick

look at creation of a VM in the Azure portal so you can see those VM components firsthand we'll navigate over

to the Azure portal I'll click on Virtual machines in the lefthand menu and we can create a VM from scratch or I

can actually select the option to create a VM with preset configurations this is Handy because then I can choose a path

based on the workload type for example if I pick production it's going to default to some higher availability and

performance options and if I choose Dev test it's going to take a lower route so I'll pick Dev test in fact if I change

my mind and want to go from scratch I can simply skip this step but I'll continue to create a

VM I have some Basics here I need to pick the subscription where I'd like to create I'll create a new Resource Group

for this give it just a quick placeholder name I'll name my

VM I'll pick the region where I'd like to deploy the virtual machine and then my availability option so for a Dev test

scenario I'm going to pick something lower like just a single zone but I can extend that VM configuration across

multiple fault domains to improve my availability in the event of problems within the regional data

center security types see here we have some similar options that we'd see in an on premises scenario so I can

enable secure boot a virtual TPM which I'd need for features like bit Locker so much like we'd see in configuring a

Windows or Linux virtual machine in our own Data Center and I can choose from my image so my image type is going to allow

me to set my operating system and you'll see here an array of Linux and windows ser and windows client operating systems

and if I scroll down here you'll notice I can also pick the virtual machine size so this allows me to pick how much

compute of CPU and memory I need and I'm going to see an Associated cost in each of those

cases and just going across the list here you'll notice for diss I can pick my operating system disk size I can set

whether I'd like standard or premium SSD I can even go back to a standard HDD so I'm getting away from the solid state to

the lowest tier performance which may be okay in a Dev scenario and I can also attach some data discs you'll see down

here as well if I go to networking I can assign the network to which I'd like this virtual machine to be connected I

can also choose a network security group with which I'd like this virtual machines network interface to be

associated with we'll actually talk about work security groups a bit later so remember this when we get to that

topic you notice I have some load balancing configuration options here which would Factor if I were configuring

say a VM based web server Farm if I go to management I can configure some management

Behavior I'd like to enable auto shutdown something common in Dev test scenarios to make sure I'm not spending

money running a machine that's only needed 8 hours a day while my devs are in the office I can conf configure my

login behavior and then some monitoring options as well and once you've gone

through all the tabs configured your desired options you can hit review and create it's going to bring you to a

review screen and if you've missed anything it's going to flag it at the top for you so you can go back to

whichever tab has that little red circle in the yex and configure whatever it is that you were missing and once you've

configured all of your required settings here then you can go over and click view one more time create and you'll have a

virtual machine in a matter of just a few minutes and it's just going to pop into the list here the moment it's

available and our final stop in coverage of Compu and Azure is azure app service which is an HTTP based service for

hosting web applications rest apis and mobile backends I think it'll be helpful for you to understand the types of

applications you'd host in Azure app service so you can recognize this as the answer for some of those questions on

the exam so the main four that come immediately to mind are web apps API apps web jobs and mobile apps so to

clarify just a bit by web apps I mean using asp.net Java Ruby node PHP or even python running on Windows or Linux as a

host OS and then API apps which would mean rest based web apis using your choice of

language and framework and this includes full Swagger support and Publishing then to the Azure Marketplace if you wish

that Azure Marketplace gives us a means not only to publish services to a central marketplace where they may be

available for free but it's also a way for commercial solutions to be advertised to the larger Global

Community whether you're just accommodating easy deployment for customers you're already engaged with or

with the aim of just making your solution broadly available and searchable in that

catalog next we have web jobs so web jobs allow us to run a program an executable maybe a python or node.js

script commands command line batch commands Powershell or even

bash which we'd often be doing in the same context as a web app API app or mobile app so it's not just isolated

scripting capability it can be coordinated with other components here within the app service and then

scheduled or run by a trigger potentially these are often used to run in background tasks as part of your

application logic so whether that's a web app or an API app or a mobile app and then we have mobile apps we' use the

app service here for mobile apps to quickly build a backend for IOS and Android apps and we canable

authentication with social identity providers and push notifications execute backend

logic all really common needs as you might imagine with mobile apps think of all the apps you've used on your phone

where you authenticate with a social identity whether that's Microsoft Google Apple or you get push notifications from

an app all solutions that we can develop on top of azure app service moving on we're going to talk about networking

related services on Azure we'll talk about virtual networks virtual subnets the VPN Gateway v-net peering and

express route let's talk about each of these components individually beginning with the virtual Network which is a

logical representation of your network in Azure you'll often hear a virtual Network simply called A v-net and A

v-net contains one or more subnets now in case you get bogged down as we go through all of these related

components I'm going to try to visualize these for you at the end to help bring them all together so you can keep them

straight in your head for the exam so digging into v-ets a bit further v-ets provide logical isolation and Azure

dedicated to your subscription you create a dedicated private cloudon Network it's one we can securely extend

to our data center with a sight tosite VPN or with express route for that matter which was then create a hybrid

Cloud but VMS and different v-ets cannot communicate by default so remember I said a virtual Network creates isolation

so if I have virtual Network a and virtual Network B we cannot communicate between those two by default there are a

couple of ways we can change that and I'll touch on connectivity between v-ets more in a

minute so let's look at subnets so subnets segment the address space of a v-net to create sub networks so

basically we're carving up our virtual Network IP range into smaller blocks which are the

subnets that would allow us to deploy specific resources into their own subnets it's quite common we'll see say

all databases and database servers deployed to a specific subnet and application servers deployed into their

own subnet so that's what we'd call Network segmentation and when you have all resources of a given type in a

specific specific subnet it makes controlling access in and out of that subnet a bit simpler because for example

if you have all of your database instances in a subnet they're generally going to have similar Port requirements

if you have many of the same resource types such as several database instances of the same platform like Microsoft SQL

maybe it's MySQL maybe it's postgress you're going to have fewer rules on your Network Security Group in that

case now this this can affect outbound access and routing traffic between resources now remember VMS and different

subnets within a virtual Network can communicate by default so again I'll visualize these boundaries for you in

just a moment now moving on we want to talk about the virtual Network or VPN Gateway a virtual Network Gateway sends

encrypted traffic between an Azure v-net and an on premises location over the Internet remember this is a core

component of the hybrid cloud model and sight tosite VPN traffic does traverse the internet is it secure of course it's

encrypted but it's traversing the internet so that does add a small degree of uncertainty as one might imagine

there's no one organization that has full control over the internet but it also calls attention to the importance

of our selections of azure regions and region pairs we want to have an azure region that we work with that's

physically proximate to our organization and or our user base whenever possible then we have v-net peering so

v-net peering enables seamless connection between two or more virtual networks in

Azure and once you've established that peering relationship the two v-ets then function as a single Network in terms of

connectivity remember I mentioned resources in different v-ets cannnot communicate by default there there's a

level of isolation there and vnet peering bridges that Gap another way we can bridge that Gap incidentally would

be to use a VPN connection between those two v-ets I'll remind you of that when we look at the visualization of virtual

networks and the related components let's talk for a moment about express route express route extends your

on premises networks into Azure over a private connection with the help of a connectivity provider a network provider

really and the traffic does not Traverse the internet which is an important distinction from a sight tosite

VPN it means latency is generally going to be less the control is greater the security is a step

higher because it's all private connectivity and for name resolution we have Azure DNS which is a hosting

service for DNS domains that provides name resolution using Microsoft Azure infrastructure for the exam remember

that Azure DNS can provide both internal and external DNS by internal I mean you can resolve

your internal DNS domains that you're not exposing to endpoints on the internet and external

DNS for domains that need to be resolvable outside of your network by entities outside of your

organization as would be the case for a corporate website for example and the final Concepts I'd like to introduce you

to in the network discussion are are private and public endpoints we have the service endpoint

which provides a way to lock down access to all instances of a p service in a v-net and a service endpoint would be

accessible from the public internet a private endpoint grants access to a specific instance of a resource of a p

service in your v-net on a private IP address it enables access from an on premises location without a public

endpoint these are the key aspects I think you should remain aware of for the exam now

to make sure these concepts are crystal clear in your mind for the exam I want to explore these with you visually for

just a moment so I have a virtual Network in Azure this is my Azure v-net the 10100 16bit net mask big block of

addresses I could certainly divide that into multiple subnet and over here I have another Azure v-net this one has

some virtual machines in it be those servers or clients and we remember that the endpoints in one v-net cannot

communicate with the endpoints and services in another v-net they are isolated I can fix that with v-net

peering so these networks are now connected so the two virtual networks function as one from a connectivity

perspective and then perhaps I have my corporate data center my on premises Network I can connect my on premises

networks to Azure via a site tosite VPN incidentally I could also connect one Azure vnet with another using a VPN but

we typically don't do that v-net peering tends to be faster and we have encryption down at the service level so

we're not worried about it vet peering is typically how we connect networks in Azure so I could carve out some subnets

in that virtual Network maybe I have a web app in one subnet I could set up a private endpoint

in another subnet and use that to connect to Azure storage from on premises without the need to connect to

a public endpoint over the internet and I believe that should be as deeper deeper than you can expect to go

on the Azure fundamentals exam now related to networking are some network security Concepts I'd like to cover with

you these used to be called out explicitly in the syllabus they were dropped out in the latest revision but

they are fundamental and I don't want to rule out the possibility that they might appear in the exam we certainly hear one

or more of them at least mentioned in passing with other topics we're going to touch on defense in depth the network

security group or NSG for short Azure firewall and Azure DDOS let's start with defense and depth

which is not an Azure service at all but a security principle everyone should be familiar with defense in depth says a

layered approach that does not rely on one method to completely protect your environment is best no security control

is perfect so if we fail to stop the attacker say at the firewall perhaps we block the attacker on the endpoint with

extended detection and response technology now network security group is something I mentioned earlier when we

were talking about Azure virtual machines so a network security group contains security rules that allow or

deny inbound Network traffic to or outbound Network traffic from several types of azure resources for each rule

you can specify a source and destination port and protocol and we can apply a network

security group to a subnet or a network adapter or actually both most commonly we see network security groups applied

to a subnet but remember a network security group gives us allow or deny capability for inbound and outbound

traffic sounds a lot like a firewall right it actually looks a lot like a firewall when you look at its rules and

I'll show you that in just a moment and again it can be applied to a subnet or a network adapter but just to make sure

you're crystal clear on the concept and how it protects a VM let's go have a look at a network security group in the

Azure portal I'll navigate to the Azure portal and I'll click on network security

groups over in the menu on the left here and we'll look at an existing Network Security Group I'm going to look at my

backend Network Security Group here which protects my database here and you'll notice that the list of rules

here looks very much like a firewall I see inbound security rules I see outbound security rules and I can

configure a network security group to be associated with individual network interfaces on Virtual machines for

example or I can associate a network security group with an entire subnet so for example maybe I've used segmentation

to put all of my datab base servers all of my database VMS in a single subnet I could configure the rules one time in a

network security group and apply it to that entire subnet and we'll take a look at inbound

security rules and you'll notice here that the rules are prioritized and the general idea here is that the engine is

looking for a match and if no match is found the last rule is deny all inbound much like you'd see on a typical

firewall rule list and I'll click on ADD so we can look at an bound security rule adding a new rule and some of the

flexibility you have here you see I can configure my port ranges from any port to very specific I can configure my

destination from the very broad any down to specific IP addresses or IP ranges and you notice there's a helper

in the field there to guide me on the format that it's expecting and for service I can leave this at custom and

configure my port range and my protocols from scratch or I can select from a very long list of common protocols for which

Microsoft will do some of the configuration for me so if I choose Microsoft SQL for example it's going

to select the default port for me automatically the destination being 1433 TCP protocol I'm creating an allow rule

generally speaking and I'll switch that over to RDP remote desktop protocol and you see the port changes to 3389 the

default port for the RDP protocol I can give my rule an intuitive name and a description set my

priority and then when I'm creating new subnets or new virtual machines I can attach that NSG or associate it to the

network interface on a VM or a subnet so I hope that was helpful for just securing that Concept in your mind

so moving on let's talk about Azure firewall which is a managed cloud-based network security service that protects

your Azure virtual network resources so Azure firewall is a fully stateful firewall is a service with

built-in High availability and unrestricted Cloud scalability so firewall is a service we don't have to

worry about managing appliances of any sort and the availability and scalability are built in we don't need

to specify the number of instances the service will scale to meet our need s automatically and like many Azure

Services it comes in tiers with Azure firewall we have basic standard and premium you don't need to worry about

the details of the service on a tiered basis just wanted to make sure you have basic

awareness and the last service I wanted to talk to you about from a security perspective was Azure DDOS which

provides protection from as the name implies distributed denial of service attacks the standard tier of azure DDOS

provides provides enhanced DDOS mitigation features to defend against distributed denial of service attacks

and that standard tier all flow includes enhanced logging alerting and Telemetry that's not included in the free basic

tier which is actually present in your Azure subscriptions by default you don't have to do anything to enable that Azure

DDOS basic functionality it's really there providing a layer of protection for all of your azure INF structure and

services by default and that's a wrap on Section 2.2 which brings us to section 2.3 describe Azure storage services so

topics here include compare Azure storage Services describe storage tiers describe

redundancy options and describe storage account options and storage types you'll also be expected to

identify options for moving files including a copy asure storage EXP explor and Azure file sync so we'll

touch on the basic features of each so you can easily identify the right tool for a use case and finally describe

migration options including Azure migrate and Azure data box and we're going to start with a look at the most

commonly used storage types which would include blob storage disk storage and file storage and for the exam I also

want to talk to you about storage tiers and for the exam you're just focused on the key characteristics of each and

where they fit to make sure you can pick the right option on those exam questions we'll begin with blob storage which is

storage optimized for storing massive amounts of unstructured data which raises another question what exactly is

unstructured data so let's take a quick sidebar because you'll need to know this concept for the

exam specifically unstructured data is data that cannot be contained in a row column database like Microsoft SQL and

it does not have an Associated data model good examples here would include images video files social media post

unstructured and then we have structured data which is data contained in rows and columns in a structured database like an

Excel spreadsheet Microsoft SQL MySQL postgressql bearing in mind you're not going to get

questions directly about un structured versus structured data but you do need to understand the difference between the

two for questions on Concepts like blob storage next up we have file storage which is fully managed file shares in

Azure accessible via SMB or NFS SMB is how we access files on a Windows system quite typically and NFS is a rough

equivalent in the Linux World unique in form versus SMB but similar in function next up is disk storage Azure

managed discs are Block Level storage volumes that are managed by Azure and used with Azure VMS and do pay special

attention to the areas I call out in bold type and with the highlighter these are going to be helpful to you on exam

day two other types of storage we need to touch on include Azure table storage and Q

storage so let's start with table storage which is a service that stores structured nosql data and Azure

including a schema less key attribute store so that differs from a relational database where there'll be a schema what

you want to focus on here is structured no SQL data and then we have q storage which is a service for

storing large numbers of messages accessible from anywhere via authenticated HTTP or https calls in

production we should be using https of course because that's encrypted next we're going to dig into

storage tiers and for purposes of our discussion here we're going to look at these side by side so you understand how

they compare relative to one another so with storage tiers we have hot cool cold and archive access tiers to store blob

object data in a costeffective way and you can use life cycle management policy to automate your tiers but where we want

to focus is on their relative cost and performance so we'll start with the cost to store data it's going to be least

expensive in archive and then going upward in expense cold cool and hot so when we're storing data that we'd like

to access frequently with best performance the storage is going to be most expensive in that hot tier now now

when we talk about access cost the reverse is true because the assumption is as we move

from hot into cool cold and archive our need to access that data is going to be less and less over time and that we will

also be more flexible in the performance of that retrieval so let's take a look at these

so starting with archive that's an offline tier optimized for storing data that is is rarely accessed and has

flexible latency requirements on the order of hours this is going to have the lowest storage cost but High access cost

and you're not going to get to it fast right that's what they mean by flexible latency and then we have the cold tier

which is an online tier optimized for storing data that is rarely accessed or modified but still requires fast

retrieval so lower storage cost and higher access costs compared compared to the cool tier which is an online tier

optimized for storing data that is infrequently accessed or modified so this has lower storage cost and higher

access cost compared to the hot tier which is an online tier optimized for storing data that is accessed or

modified frequently highest storage cost lowest access cost and remember that key differentiator about archive it's

offline and it's also a tier with flexible latency requirements if we're using it so we're not pulling that data

back fast and looking in the middle tiers there especially you might ask yourself when would I use cool versus

cold they look pretty similar right well there are a couple of things we can focus on but one is the time of storage

so with archive Microsoft says this data should be stored for a minimum of 180 days so we're getting low stor storage

cost with a longer commitment there essentially cold should be stored a minimum of 90 days cool stored a minimum

of 30 days and hot data is just what it sounds like that data that we are accessing day to day hour to hour minute

to minute and more frequently even now let's talk through storage redundancy options and there are four

options you should definitely know for the exam the first is lrs locally redundant storage which copy your data

synchronously three times within a single physical location in the primary region then we have zrs Zone redundant

storage which copies your data synchronously across three Azure availability zones in the primary region

so that gives us the benefit of availability zones so some of that physical protection we talked about a

bit earlier in the session so with lrs and zrs redundancy is limited to the the primary region only so this is not going

to help us in the case of a disaster that takes out a full Azure region and that's where these next two options come

into play first there's Geo redundant storage or GRS which copies your data synchronously three times within a

single physical location in the primary region using locally redundant storage but then it copies it

asynchronously to a single physical location in the secondary region three copies again using lrs so you've got

three copies using lrs in the primary region and three more in a single physical location of the secondary

region and then we have gzrs geozone redundant storage which copies your data synchronously three times within the

primary region using zrs Zone redundant storage so we're gaining the benefits of that secondary region but we're also

gaining the physical protections of availability zones within each of these regions so with both GRS and gzrs our

redundancy is extended to the secondary region but it's that extra physical protection of the availability zones

that makes a difference so with GRS we're copying within a single physical location where with gzrs we're copying

within the primary region using Zone redundant storage and that that's why Microsoft recommends gzrs for apps

requiring High availability we've covered a lot of ground related to storage here which is

why I'd like to give you a quick tour of azure Storage security and redundancy features to lock this knowledge in for

exam day we'll navigate to the Azure portal I'll click on storage accounts over here

in the menu on the left and I'll create a new storage account so you get a sense of the configurable options in terms of

security and redundancy and for the basics I'll select my subscription give the storage

account a name choose the region where I'd like to deploy the storage account select my level of performance

understanding that if I pick that premium option over standard premium is going to come at an additional cost but

will definitely provide Advantage for low latency workloads like production

databases for example and I can then choose my level of redundancy and here I see those four

options we looked at just a moment ago and they're listed in increasing order of redundancy beginning with locally

redundant storage on through Geo redundant Zone redundant and then ultimately geozone redundant

storage and going to the advanced column here I have a security section that lets me get all the way down to the TLs

version that I require and scrolling down here some capability to configure the available protocols as well as the

scope of access and copy operations when I look at my networking you notice by

default here it says enable Public Access from all networks I can bring this down to disabling Public Access and

using private access that would be via those private endpoints we talked about a bit earlier in this

session and looking down to network routing I can configure whether or not traffic in and out of the this storage

account is routed across the Microsoft backbone or the internet so definitely capability to reduce my attack surface

my visibility my privacy and get a bit more control over performance and then we'll go over to data

protection and here I can configure some recoverability features point and time restore some

soft delete capabilties so when I delete something it's actually available for Recovery I'll go over to the encryption

Tab and you'll see see here I can choose whether I let Microsoft manage my keys or I manage the keys myself in

Regulatory Compliance scenarios we'll often see customers select that option to manage their own keys in many cases

because it's required for specific types of sensitive data and you even see an infrastructure encryption option here

which encrypts the storage account data at not only at rest but adds a second layer of encryption to your storage

accounts data in Azure all of your storage accounts are encrypted by default this is really what we call

Double encryption more or less and that's a quick look certainly more than you'll need for the exam but but a lot

of configurability there in terms of redundancy security and recoverability now we're going to talk

through some file movement and data migration options so the focus here is largely Azure storage and the first tool

is a copy this is a command line utility you can use to copy blobs or files to and from your storage account and then

we have Azure storage Explorer this is a standalone app that provides a graphical interface to manage files and blobs in

your Azure storage account however it does support file and blob upload download or moving files between

accounts so as you can see a copy a bit more focused and perhaps more suitable for certain automation code or scripting

scenarios and finally we have Azure file sync which is a tool that lets you centralize your file shares in Azure

files and keep the flexibility performance and compatibility of a Windows file

server really supporting familiar functionality in a new place and once installed on a local Windows Server it

will automatically stay bidirectionally synced with your files in Azure thus the name sync it will automatically stay by

directionally synced with your files in Azure and I've called out the key aspects of each of these tools as you

see here to help you identify or eliminate each as an answer for an exam question next up we have Azure migration