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  Not many domains have popularity as cloud computing has in recent times.
  So it's no secret that cloud computing adoption is on Rice as you guys might have known Microsoft
  Azure is one of the best and leading cloud service providers and
  it certainly makes it to the list of top cloud computing skills.
  That one must have if you want to make a career in this
  domain then you have landed at right. Place hi, I welcome you all to this
  full course on Microsoft Azure, which not only talks about is your fundamentals, but will also take you deep
  at conceptual levels before we get into details.
  Let's look at our agenda for today for better understanding and ease of learning
  entire course is divided into multiple modules.
  First module introduction to cloud is about what exactly cloud computing is different kind of
  deployment and service models in cloud computing second model
  is about as your fundamentals. Well in this module we will learn how to create a
  short Street our account and we'll also discuss one of the code Computing service,
  which is Usher virtual machine next up in the third module will discuss as your storage
  services and database features in detail. Fourth module is
  about different network services offered by assured in here will
  discuss as your virtual Network and related Concepts like subnets security groups and many more
  in fifth module. We will learn how to secure your Access to your resources using identity and access
  Management Services like Azure active directory six module
  is all about is your develops in this module. We'll learn how to simplify and accelerate entire divorce process using Azure develop services,
  like a sewer pipeline as your boards Etc in seventh module will
  talk about different services offered by Usher when you
  are dealing with current training Technologies, like machine learning a iot and Manny, Moe also will be comparing after sure with other leading service providers like AWS and gcp final module is mostly korea-related in this module.
  We'll discuss most frequently Asked interview questions in Azure
  interviews will also discuss roles and responsibilities job Trends and skills that you should have to ease your interview.
  Thank you everyone while you are at it. Please do not forget to subscribe at Eureka YouTube channel and hit the Bell icon to stay
  updated with current trending Technologies. So let us move further and quickly
  take a look at today's agenda first firstly, I would be discussing the basics of cloud as
  in why it is needed and what it is exactly. I would also discuss the different models that cloud has to
  offer to you like it's service models and also its deployment
  models and also discuss the different Cloud providers that are there in the market and finally I would
  finish things off with the demo part. I hope this agenda
  is clear to all of you firstly let's understand why Cloud to understand this So we need to understand
  the situation that existed before Cloud came
  into existence. So what happened back then and firstly in order
  to host a website, you have to buy a stack of servers and we all know that servers are very costly.
  
  So that meant we ended up paying a lot of money next was the
  issue of traffic. Now as we all know if you are hosting a website we are dealing with traffic that is not constant throughout the day and that meant more pain we would understand that as we move further and the other thing was monitoring and maintaining your servers.
  Yes, this is a very big problem now all these issues. They led
  to certain disadvantages. What are those as I mentioned servers
  are very costly. Yes. The setup was again costly and thus you ended up paying a lot of money and there were other factors contributing to
  this point. Let's discuss those as well. One troubleshooting was a big
  issue since you're dealing with a business. Your Prime Focus
  is on taking good decisions so that your business does well, but
  if you end up troubleshooting problems, Soare you focus more on infrastructure related issues.
  Then you cannot focus more on your business.
  And that was a problem. So either you had to do multitasking or you have to hire
  more people to focus on those issues thus again you ended up being more money as I've discussed the
  traffic on a website is never constant.
  And since it varies you are not certain about its patterns.
  
  Say, for example, I need to host a website
  and for that what I decided I am reserving to petabytes of total memory for my usage
  based. On the traffic but as the traffic, where is there would be
  times when the traffic is high and my whole to petabytes of data is
  consumed or space is consumed Roger. But what if the traffic is very low for certain hours of the day.
  
  I'm actually not utilizing these servers. So I end up paying more money for the servers than I should be.
  So yes upscaling was an issue. So all these things were an issue because we were paying more money.
  We do not have sufficient time to take our decisions properly.
  
  There was ambiguity. There was more trouble. All monitoring and maintaining all these
  resources and apart from that one important point which we need
  to consider is the amount of data that is being generated now and that was being generated then then it was okay,
  but nowadays if you take a look at it the amount of data that is generated is
  huge and this is another reason why Cloud became so important.
  Yeah, as of mentioned the data now, we all know that everything is going online these days
  and what that means is we shop online we buy food online.
  We do almost everything. What is required
  as an whatever information we need we get everything online your bookings
  and reservations. Everything can be taken care of that means we have a
  lot of data that is being generated these days
  and this is Digital Data back in those times. We were communicating through verbal discussions
  and all those things so through paperwork and that was a different
  data to maintain since everything is moving on cloud or moving online.
  The amount of data that we have is used these days and then when you have
  this huge amount of data Are you need a space where you can actually go ahead
  and maintain this data? So yes again, there was a nude of this
  piece and all these issues that is your cost. You're monitoring your maintenance providing sufficient space.
  Everything was taken care by Cloud. So let us
  try to understand what this cloud is exactly. Well think of it as a
  huge space that is available online for your usage.
  This is a very generic definition to give you to be more specific.
  I would be seeing that think of it as a collection of data
  centers now. Yes, it does again at a place where you store your
  data or you host applications basically, so when you talk about these data centers,
  they were already existing. So what did Cloud
  do differently? Well, what cloud did was it
  made sure that you are able to orchestrate your various functionings applications managing your
  resources properly by combining all these data centers together through a network and then providing you the
  control to use this resources and to manage them properly to make it even more
  simpler. I would say there was a group of people or organizations.
  
  Basically that went ahead and bought these servers these compute capacities storage places compute services and all those things and they have their own channel or
  Network. All you have to do was go ahead and rent those resources only to the amount you need it and also for the time that you needed.
  So yes, this is what cloud did it let you rent the services that you need and you Only those services that you need
  so you ended up paying for the services that you rented and you
  ended up saving a lot of money. The other thing is these service providers.
  They take care of all the issues like your security your underlying infrastructures and all those things.
  
  So you can freely focus on your business and stop worrying about all these issues.
  So this is what cloud is in simple words. It's a huge space which has all these services
  available and you can just go ahead and pick and render services that you want to use.
  
  So what is cloud computing? Well, I've already discussed
  that just to summarize it I would say it is nothing but an ability or it is a place
  where you can actually store your data. You can process it and you
  can access it from anywhere in the world.
  Now. This is an important Point say for example,
  you decide to choose a reason for infrastructure somewhere in u.s.
  You can certain maybe China or maybe in India and you can still have access to all your resources that is there in u.s.
  All you need is a good internet connection. So that is what cloud
  does. Makes the world accessible it lets you have your applications wherever you want to and manage
  them the way you want to so this was about cloud computing
  guys. Next we would be discussing different service models.
  
  Now you need to understand one thing you are being offered cloud
  services the platform to use your services or your applications basically, but then different people have different requirements.
  There are certain people who just want to consume a particular resource or there's certain people who actually want to go ahead and create The View.
  Own applications great the own infrastructure and all those things.
  
  So based on these needs we have particular service models that is your Cloud providers provide you with
  a particular model which suits your needs. So let
  us try to understand these models one by one we have these three models that
  is your iaas your paas and your saas. I would be discussing them in the reverse order.
  
  That is I would be talking about saas first and then I would
  go upwards so let us start with saas or sad. SAS
  is nothing but a software-as-a-service. Now what happens here
  is basically you are just consuming a service which
  is already being maintained and handled by someone else to give you
  a valid example. We have a Gmail. All you do is
  you send mail to people and you receive mails and whatever functionality you
  do is you just use the service that is there. You do not have to maintain it.
  You do not have to worry about up scaling down scalings
  security issues and all those things. Everything is taken care by Google say for example But yard email is what I'm talking about Google manages everything
  here. So all you have to worry about is consuming that service now this model is known as software as a service that is saas.
  Next we have passed that is platform as a service now here you are provided with a platform where you can actually go
  ahead and build your own applications to give you an example.
  
  We have our Google app engine. Now when you talk about Google app engine, what you can do is you can go ahead and you can create your own applications and you
  can put Put it on Google app engine so that others can use it as well.
  So in short you are using the platform to create your own applications, and lastly
  we have iaas that is infrastructure as a service. Now.
  
  What do I mean by this? Well, the whole infrastructure is provided to you so that
  you can go ahead and create your own applications. That is an underlying structure is
  given to you based on that. You can go ahead and choose your operating systems the
  kind of Technology you want to use on that platform
  the applications you want to build an old those things.
  So that is what an IAB S is infrastructure-as-a-service basically,
  so these were the different models that I wanted
  to talk about. So let us move further and discuss the next topic.
  That is the different deployment models that are there.
  Now when you talk about deployment models, you can also call them as different types of
  clouds that are there in the market we have these three types.
  
  That is your public Cloud your private cloud and your hybrid Cloud.
  Let us try to understand these one by one now as
  the name suggests the public Cloud it's available to
  everyone you have a A service provider who makes these services or these resources available
  to people worldwide through the internet. It is an easy and very inexpensive way of dealing with the situation because all you have to do
  is you have to go ahead and rent this cloud and you're good to use and
  it is available publicly. Next. We have the private Cloud now.
  
  This is a little different here. You are provided with this service and you can actually go ahead and
  create your own applications. And since it's a private Cloud
  you're protected by a firewall. Add wall and you do not have to worry about various other
  issues that are there at hand and next. We have our hybrid Cloud now.
  It is a combination of your private cloud and your public
  Cloud say, for example, you can go ahead and build
  your applications privately you can use them. You can consume them you can use them efficiently.
  When you sense that peak in your traffic. You can actually move it to public that is you can move it to the public cloud and even others can have access to it and they can use
  it. So these are the three basic deployment models that are there
  for you. Exposure or your usage rather and you can go ahead and use those as well.
  I hope this was clear to all of you. So let us move further and try to understand the next topic that
  has different Cloud providers that are there in the market.
  
  Now as I've mentioned what happened was since Cloud came
  into existence quite a few people went ahead and they bought
  their own infrastructure and now they rent the
  services to other people and when you talk about this infrastructure, they're
  quite a few people out there who are actually providing these cloud services to different people
  across the globe now when you talk about These
  Cloud providers. The first thing that should come to your mind
  is Amazon web services because it is highly popular and
  it leaves other Cloud providers way behind. The reason I'm saying
  this is the numbers that talk about Amazon web services to give you an example.
  If you talk about its compute capacity. It is six times larger than all
  the other service providers that are there in the market say for example, if you talk about the
  other service providers in the market if the compute capacity combined was ex-army Has on web services
  alone gives you a capacity of 6 x which is huge apart from
  that. It's flexible pricing and various other reasons. That is the services it provides
  and all those things. It is rightly a global leader and the fact
  that it had a head start that is it started
  way before many other services that are there
  in the market. It actually gained popularity. And now we see quite a few organizations going ahead and using Amazon web services apart from that.
  
  We have Microsoft Azure, which is a Microsoft product and we all All that when Microsoft decides to do something they
  expect that they kill all the competition that is there in the market.
  It is still not in terms with Amazon web services or few other service providers that are than the market but not
  very neck to neck but it is probably the second best when you talk about
  Amazon web services or the cloud service providers in the market.
  So, yep, it has a lot of catching up to do when you compare it with Amazon web services, but it
  is still a very good cloud service provider that is there in the market.
  Then we have something called as Google Cloud platform again a very Very good cloud provider in the market.
  Now. Why am I saying this? We all know the infrastructure that
  Google has to offer to you. It has one of the best search engine that is then the
  market and the amount of data they deal with every day
  is huge. So they are the Pioneers when you talk about big
  data and all those things and they know how to actually handle this amount of data and how to have an infrastructure that is very good.
  That is why they have a very good facility and that leads to it being one
  of the cheapest service providers in the market.
  Yes, there are Features that DCP offers which are better, even than Amazon web services when you talk about its pricing and the reason for it is it has various other
  services that are there water does is it helps you optimize various
  costs how it uses analytics and various other ways by which it can optimize the amount of
  power you use and that leads to less usage of power.
  
  And since you are paying less for power that is provided as a paying less for power
  you end up paying less for your services as well. So that is why It is so cost efficient.
  Then the other service providers that is we
  have digital ocean. We have to remark we have IBM which is again very popular.
  
  But that is a discussion for some other time. As far as the service providers go.
  These are the major ones that as we have Amazon web services.
  We have Microsoft Azure, we have DCP which are talked about a
  lot. This was about the basic Cloud providers and the basic intro which I wanted you all to have.
  I hope you all are clear with whatever Concepts we've discussed in time.
  So let us move further and switch into the demo. Let us try to explore a few of these services or
  Cloud providers as in at least the introductory part.
  Okay. So what I'm going to do is I'm going to switch into the console basically where we can take a look
  at these Services one by one. So yes guys, what I've done is
  I've cornered and have logged into my AWS account now AWS provides you
  with a free tier and then they have the paid Services as well.
  Let's discuss these one by one first. I would
  talk about AWS then I will talk about gcp and to some extent I would also discuss a
  juror as well, but But let's focus on AWS for first
  one point, which I did not mention while going through the concepts was
  AWS provides you with a free tier. Now when I see a free tier, this is where you do
  not have to pay any upfront money. You can actually go ahead and have access to AWS services
  and see how they work and once you are confident and comfortable with
  them, you can actually go ahead and decide whether you want to
  buy those services or not. So yes, these services are made available to you for free for one complete Year.
  
  Yes. There are certain restrictions on it. But as long as you stay in those restrictions, you won't be Panting if you cross those restrictions.
  Yes in abuse will charge you now. How does AWS do that?
  Well, when you create an account, you have to
  give in your credit card details or debit card details, when you do that database will cut a lump sum amount from your
  account verify account and reinstate that amount back into your account so
  that none of your money is used but just a verification is done that
  this is your valid credit card or your debit card and once your 12 month free trial expires, then they would notify you that your free trial is over.
  
  Would you want to go ahead and continue using our services if you say yes, then they would charge meanwhile, they won't charge you so
  you can stay relaxed and you can actually go ahead and give you a credit
  card or debit card details, but just make sure that you set an alarm and once your free trial gets over you
  kind of either revoke your exes or go ahead and continue with the paid services that it abuse has
  to offer to you. So what does this re-tear has to offer to you?
  Basically, let's take a look at those. Well firstly we have compute Services when you talk about AWS and Name a few we have ec2.
  We have Lambda which are popular Services now easy to is something like a raw server where
  you can actually go ahead and post our websites and applications.
  It is very popular. And if you want to use it, it obvious gives you 750 hours per month for
  free. Then you have some service called as Amazon quick set which is basically an analytic service and I
  won't get into the details of what it does basically, but
  you have a space of 1 GB available to you that is nothing but spice capacity basically again, I won't get
  into the details because I want to Stick to the surface as far as the session goes, then you have other
  services like your database service, which is an RDS.
  You have your storage service, which is S3 Amazon Lambda. Now Lambda is another compute service which is
  similar to your ec2. But ec2 is more of a place
  where you can host a websites. Where as Lambda does not let you host a website.
  But yes, you can definitely go ahead and do a lot of background application work.
  
  When you talk about AWS Lambda apart from that database also
  provides with various videos that talk about how do you want to go ahead
  and get started with using this? Sosa's how to create
  an account how to create instances and all those things.
  So this was about the free tier let us kinda move further and see how the console looks like.
  You can actually go ahead and create your own instances. You can do a
  lot of things. So this is what the different services that a device has
  to offer to you. You have your compute Services developer tools machine learning and I'll takes storage database Services.
  
  You can actually go ahead and use these on your own you can go ahead and create certain instances here now once
  you click here oniy Easy to you get to see the number of instances that are active the security groups
  that are there the keep is that you have let us see or take a
  look at an instance. Basically. I would tell you how to create one.
  I won't create one myself because I have certain ones running already.
  I would just walk you through how the process works.
  When you click on that launch instance. It will give you options in what kind of an instance
  do you want to create so you can actually go ahead and pick the one that suits your need
  based on the OS you're using and stuff like that since I'm using a Windows.
  
  We'll be picking one for Windows and I would be using the one that is freely available to me or eligible for
  my free tier. So when I say select I see that a free
  tier eligible T2 micro instance is available to me.
  
  I can either click on this and directly go to the final step of creation, or I can take a step
  by step approach. That is if I want to modify it.
  I can go ahead and given these details as in the number of instances my purchasing options Network subnet auto-assign public IP and
  all those things. So let's click on next and we can also also put in these
  details, but I'm going to stick to the default
  decisions or the selections. You can also
  go ahead and configure your security groups. I would talk about
  that as well. Do not worry and finally it would say do you
  want to remove and launch it? Once you click
  on this you would have a new instance they would be couple of statistics and you'd have your instance available for use
  to give you an example take a look at this as you can see.
  I have two instances running and the security checks are
  done and I can actually go ahead and do a lot of things with it.
  I can actually go ahead I can connect to a server.
  Again have my security group security policies. And when you have an instance,
  you can do so many things for hosting a website and the other things that are there now,
  I just mentioned keep are values and I mentioned security groups.
  
  Now when you talk about the key pair it is
  nothing but an authentication process that lets you use your instance.
  
  It is a verification process. Basically it varies when you talk about using it on your
  Linux and using it on your Windows Windows, you would need it for an external login as
  far as when you talk about Linux you'll have To
  go ahead into your terminal and generate those SSH or your secure server Keys basically or secret selkies rather and then log into
  your website and then go ahead and use it on your server basically.
  So this is what happens. So that is something that you called as a keeper value when you talk about AWS a keeper value once
  created it is unanimous or it is not unanimous rather.
  It is primary to a particular instance and you should not lose it because if you do that instance becomes useless for you, so You have to
  make sure that once you create a key value pair
  that key value pair it stays with you and when you do try to connect to a server that
  keeper value or its value is available with you so that basically you can switch to your server and
  connect to it. And then you have something called as your security groups as well.
  Now if you come down here you can go ahead and set in your Security Group policies.
  Whatever. Those are you can create a new security group and you can just
  go ahead and add rules as in what kind of security policies you want.
  Say, for example, you have your HTTP https now if you're using
  Windows, you'll be needing our DP and those kinds of rules.
  You can go ahead and select a source you want to and accordingly you can set in your security
  rules. Once you create on click on create you'd be having your Security Group up and running for
  you and you can like stay assured that your so-called services are more than secure
  here. So yeah, this was about Amazon web services and how its
  interface looks like then you have something called as your gcp now gcp to has a free.
  The only difference is gcp gives you an a balanced amount as in say some amount of US Dollars and you can the services are paid services,
  but you can use this balance to go ahead and use those
  services. So it pans out to similar approach which aw stakes in but if you talk about their pricing, aw
  charges you on hourly basis, whereas your Google Cloud platform charges you and second
  basis. So it is more affordable. Say for example, you stop using a particular instance at
  two minutes. You'll be charged. Only for those two minutes, but if you stop
  using an instance for two minutes in AWS would be charged for a complete are so that
  is the difference between the two as far as logging in is concerned again, you'll be going ahead and giving in your
  credit card details here as well. The difference is here.
  You have to make sure that you do not enable your billing
  because once you do that, trust me, you're going to end up paying a lot of money
  because I accidentally left few instances open. The last time I logged in and
  I was charged Hefty live without me being noticed. When you see a button missing that enable billing make sure that
  you use it carefully because you do not want to be charged
  for something that you are not using. So when you talk about gcp
  this is how the interface looks like. You have all the
  services here as well there you had your computer services
  you have you have your compute engine basically and you can to come
  here and create your instances. You can click here and you can go ahead and
  go through the process of creating your instances,
  but I won't be creating an instance as far as you are gcp is
  concerned because I've given you a reason already. I'm happy working with AWS
  for now. This is your dashboard where you get in all the information as in whatever is happening as far
  as your account is concerned. So this is one of the accounts managed by a person I know who works with me and the
  certain projects which he has gone ahead and created. So it's the information for
  those details are the details for that project basically
  and then you have something called as your Microsoft Azure now, I won't log in and
  get into the details. But yeah it to provides you with similar services.
  
  So is this what about the different cloud? Riders that are then the market and I
  just wanted you all to have some understanding as in how do these things work?
  
  And what do these Services have to offer to you? I hope this is clear to all of you.
  Why a Microsoft is your why are you guys so interested in Microsoft
  with yard. Now one thing is that Microsoft is your is actually becoming pretty big.
  I mean the cloud leader on papers. It is AWS right now, but
  if you see the growth with that has been happening in the past few years Microsoft is your is actually coming out pretty big.
  Right? So and that is the reason if you look at this graph, there are the job opportunities for
  Azure has been on a rice and that is like this is the primary reason that you guys want to learn about Microsoft with
  your because obviously you want to make a
  career shift into the cloud industry, right and for that availability of jobs
  should also be a factor. And if you see the graph this graph is has actually been taken from indeed.com, right and as you can see the graph
  is rising. So if you see as 2014 it was around .01% in the mid in the late 2016.
  It's reached around .09 it came down to a fault. But then again it is at a
  right. So this is apartment that you see but if you take my advice because I have seen the
  industry as far as I know these jobs. Are going to increase multiples in the
  future as well. Right? It's not only restricted to is or if you talk about AWS if talk about any Cloud technology, it
  has become imperative for you to learn about
  Cloud because it is the thing everything in the next 10 or 15 years is going to be on the cloud right any company which is still on its own for my servers will move
  to the cloud one day or another because that is inevitable that Is something that has to happen and that is the reason it
  becomes very important for you guys to skill up to the cloud
  level right now talking about is your like I said, so jobs are increasing every day jobs are there for you?
  So what needs to be done from you guys is prepare for the
  exam. That is therefore Azure give that exam get the certification get hands-on experience and get the job.
  This is the course. This is the path that you should have for taking a cloud computing roll.
  Right having said that so that is this is the reason why we learning
  about Microsoft Azure today moving on. Let's understand what Microsoft is your is exactly so Microsoft is your
  is a growing locations through Microsoft's Global Network of data centers,
  right? So by using the Microsoft infrastructure, you build deploy and manage applications on the has your environment
  and Like as you're like I said, it's a cloud provider.
  It provides you the cloud services you're using those cloud services,
  but those cloud services are actually on the Microsoft infrastructure.
  
  And that is what you are paying them for right? So, this is what Microsoft
  Azure is all about guys. Now, let's see a use case now that is My Philosophy is that rather than doing all the theory first and then going on to the Practical I would like to follow the reverse approach,
  right? I would I'd like to begin from practicals because that is what your exam
  will be based on your exam will be based on real-life example that you
  based on real-life scenarios Lou based on what kind of Hands-
  On knowledge you have in your as your domain. All
  right, and that is the reason every session of ours will have a use case
  through which we will try to analyze how we can implement it
  in the cloud. Right? So this is your first use
  case. This is kind of simple guys. So please pay
  attention. So we are trying to make a website
  which is something like this. Right? So what happens here is you have a set of images and these images are actually being played in the background.
  And in this website, you have a functionality to upload more
  files to the cloud and once you do that those files will automatically be added in the slideshow and
  we'll start running. Alright, so this is our use case and we have to implement it
  on the cloud. So there are two stages in the way.
  We are going to take this use cage the first stages. We're going to apply pure logic, right?
  We are going to understand how we can actually deploy it on any cloud service right?
  Not only does your butt any Cloud platform if it is out there, how can we
  implement this use case? So let's see that first and after that once you have understood that will try implementing
  it in as your so first. Let's see how We will implement this in a general scenario by pure logic.
  So your user base will be accessing the internet right now when your user will try
  to access the website, he will enter the website name, right?
  So all of that traffic will come at this point, which is called a
  load balancer. Now, what is the load balancer a load balancer is basically a service which distributes your traffic
  equally among the server's running at that time. So say there are like five servers running your website then and if traffic is coming on to
  your servers that traffic will be distributed among those five servers by the load balancer.
  So the job of the load balancer is to distribute
  the traffic equally among the service, right? So
  this is what the load balancer is all about. So your user base from the Internet is trying to access your website.
  So the traffic comes to the load balancer and the load balancer separates or Segregated traffic into equal proportions and give it to the server's right.
  So once the traffic comes onto the server's the server's process
  the request and if you talk about our website, so our photos are
  actually stored on a file system, right? So whatever files you are uploading or whatever files are there, which are already been uploaded there on a file system, right?
  
  So it will access that file system for fetching those files,
  but our servers they don't know. What files do we want?
  
  Right? What is the like say, for example, I upload a file and before uploading the file.
  There were three pictures running in the background.
  So my server should know what are those three files that
  I have excess right? There should be a list of those files that the server has to play in the background.
  Now that list of files is actually stored in a database, right?
  So what my service will do is it will first get that list from the database right?
  And once it gets at least it will fetch that. List of files from the
  file system say there are around five files in the database.
  So my server will interpret the addresses of those files from the database and
  then it will call the file system and get those addresses or get those files from there and Fry to show that in this slideshow in the website.
  
  Now when we upload the file, what happens is first your
  database is updated, right? So whatever file is being uploaded to your servers, that
  file is Renamed according to whatever parameter
  you have set because it has to be unique. Right each file has to
  be identified with a unique name, right? So it renames
  that file to that unique name and then store it on the database once entry has been made on the database then it gets uploaded
  onto the file system. Right? So guys, this is the architecture of your application just
  as the logic that will be following today. So let's try
  to implement this architecture has your nose
  Understood how we can actually architect this use case in a general way.
  Right? Let's see how we can implement it in the has your environment.
  So in the Azure environment the servers that you're trying to implement is actually provided to you by a service called the app service.
  What is AB service will be discussing in the further slides.
  Then let's talk about the load balancer and auto-scaling.
  So the load balancer is actually implemented by
  the has your load balancer and auto-scaling, right?
  And having said that then we talked about the database.
  
  So database is the mySQL database that will be using in Azure and then you have the file system which is
  called blob storage in your what are these Services you might be confused.
  Okay. What is your load balancer? What is the app so is what is
  mySQL database? What is blob storage? Don't worry.
  I will explain everything to you in the coming few slides.
  So let's go ahead then. So these are the services that you'll be using in a jar.
  Let's go ahead and understand these Services one by one.
  So let's talk about the app service first. So the app service is
  basically a part of the compute domain. All right, and in the compute domain you have
  a lot of sources, but why are we using the app service?
  
  Let's understand that. So there are basically three kinds of
  services in the compute domain if you talked about in a very broad sense.
  The first service is called the virtual machine. Now. What is the virtual machine a virtual
  machine is just like a traditional computer. Now that you have
  in your in-house data house. It is a computer that is accessible to you and you can do anything with that computer where you have all the rights to that
  computer. All you have to do is basically what you will do with a virtual machine is you will say that I need this much RAM.
  
  I need this much storage and I need this much configuration. Please give me a computer.
  So as your will create that virtual machine for you, right and it will give you
  the IP address and the password for that machine.
  What you can do is by remote desktop connection. And you can enter
  that IP address and the password and you will be able to connect to that computer.
  Now, once you connect to that computer, it is your
  computer annoyed you have the access to the user interface.
  You can do anything on this computer. You can make it a website server.
  You can make it a worker to your environment. You can use it to for
  image processing right? You can do multiple things on a so
  I like you I might be doing on your server as well.
  
  Right? So this is what virtual machines is all about.
  You can configure it to Become anything. Our next service is called the app servers.
  So it is a basically an automated version of a virtual machine,
  but with limited possibilities when I say limited
  possibilities it is this service is actually very more focused.
  Right so app service. Basically, it doesn't
  give you the access to the user interface. All right, but that gives
  you more simple interface to deal with because if you want to host a website in virtual machine you would have To configure the virtual machine you would have
  to configure the firewalls. You would have to install the necessary software like say for example,
  you have a PHP website, right? So you would have to install PHP software
  on a virtual machine and then you would have to
  copy those your website files or the files that you have
  coded into a specific folder and then you would have testified the configuration for your firewall and everything.
  Right? So there were a lot of things that you had to
  do in your virtual machine with app service.
  
  You don't have to do anything. Then you just have to specify what language you want.
  Say, for example, I want a PHP website. So I'll select PHP.
  I'll do next then last me what kind of configuration of servers I
  want. I'll specify the configuration. I click next and
  that is it. My website will be deployed automatically.
  It will ask me to upload the files. I'll upload the
  files. It will automatically send it to whatever folder it is required and this
  done right? So this is the part of app service right?
  It is more automated because the Pitching machine everything had to be done manually,
  but with app service everything happens automatically.
  I just have to upload my files, right? So this is what
  app service is all about. So, like I said, so app service is basically used to deploy an application. All right,
  you cannot do anything else with it. You cannot use it to process a
  customized workload or something like that. You can just use it to
  deploy an application and that is why it is called an app service Right Moving On Let's Talk.
  Talk about functions of functions is basically a very new technology.
  It's called the server less architecture it basically what it
  does is you don't have to specify the configuration. You don't have to specify anything.
  You just have to upload your code and it executes
  it for you, but it will not deploy any application for you.
  For example, you want to host a website.
  It's not do that. It just does processing in the sense. It will only do
  background tasks for you. For example, if you Have let me take an example which uses both these Services.
  If you have say an application like Instagram, right?
  So user uploads His image on your application. And then your application has to store that image now before
  storing that image. Maybe you want to compress the image or you want to
  apply a filter to it or whatever, right? So from your application the file is uploaded.
  And now these many tasks have to be done if these tasks are actually configured in your code,
  which is Actually uploading the file as well. It will actually
  increase the overhead on the server which is hosting an application. But
  what we can do is the way things happen today is everything is distributed.
  Right? So from your application only the file will be uploaded.
  Once the file is uploaded. Right? The tasks will be the tasks like renaming the file or compressing the file applying the filters.
  Everything will be done using the functions.
  So the function will get invoked whenever the file.
  Is it uploaded using the app servers and the function will execute all the tasks that have
  to be done on that particular image this reduces the overhead on the server which
  is hosting your application. Right? And you have your background tasks
  will be implemented by a functions and then will be
  stored in the respective file system. Whatever you have
  coded your function to do right? So this is basically the
  difference. So recapping again virtual machine is basically a computer
  you can configure it to anything you can actually
  we use app servers in a virtual machine Mallory. For example,
  you want to deploy an application you can use it by configuring a virtual machine, right?
  You can also use it as a function your virtual machine that I mean to say as in you can configure
  it to only execute background tasks. But the thing is you have to configure everything manually.
  
  If you want an automated version you can go with app Service
  app Services used to deploy an application. Right?
  But if you are use case is not about deploying application you want to do some
  raw? Searching you might as well hop for functions, which is a service which is not
  used to deploy an application but is used to execute background tasks.
  
  All right, so guys a doubt and whatever we have discussed like we discussed virtual machine.
  
  We have discussed app service and we've discussed functions.
  
  All right. Like I said, we are using the app service why because
  we are deploying a website, right? So for deploying a website, I need apps
  away. So it cannot be done using functions can be done were doing virtual machines as well, but it will need a lot
  of manual work and our job is to make everything faster right cloud computing is
  all about speeding up things. The speed of implementing is increased right so I rather use
  an app service and upload my code on the Service and it will deploy the website from right it's that simple guys.
  Let's move on to the next topic of today's discussion, which is the blob storage.
  So the blob storage is basically the file system that you need to upload your files, right?
  You definitely need a file system. There is no alternative to this.
  
  Right. So your blob storage is the place where you will be
  storing your image files, but why did we choose the blob storage by not some other service from
  the storage to Maine? Let's discuss that. So in the storage domain basically, you have three kind
  of services you have more services well, but
  these are the three main services in the blob in the storage domain.
  You have the block storage. You have the Q storage and then you have the
  backup, right? So the block storage is like I said is a file system on which you can upload
  any kind of file, right? And that's about it.
  
  There is nothing more to blob storage. This is the thing next is Kyu storage Secure Storage
  is basically a queuing service whenever you have to synchronize tasks.
  
  For example process one has to be done before process
  to and process to help it to be done before process 3.
  
  So what you can do is you can bundle these tasks in a sequential Manner and you can add it to the
  queue storage. Right? What the queue storage will do is it will actually hold these
  tasks according to the sequence that you entered, right?
  And whenever the queue storage is accessed it will give them only the first task now the second task is the third task first.
  So the way It functions is like this say for example, like I said the image processing application. I want
  to rename file first there won't I want to add filters and
  then I want to store it on the file system.
  So these three tasks I will write it down and I will add it into the queue storage now.
  See these tasks will be done by my functions.
  All right. So what functions will do is it will try to interact with Q storage and last for a task, right?
  So Q storage will give the task to Functions in a very sequential manner
  in the sense that it will first give it the task to rename the file.
  So it will rename the file. Once that task is done.
  It will again try to xsq storage and then cute store has been given a task
  to filter the image or apply filter to the image, right then we'll apply a filter to the image will be done with that and then it will try
  to again the to storage and then it will see that okay now it has to store that file in a file system which is specified the code right and it will pick that task do it.
  It and be done in the first file and then it again XS Q storage in the process goes on. Right?
  So basically Q storage is used to give a sequential manner to the processes that are trying to execute having said that this is a work queue storage then comes back up.
  So backup is a service where in you can store your in frequently accessed data, right?
  What is your in frequently accessed data could be
  for example in my company. We take a record of everything
  right we take our Out of every class that we do we take a record of every query that you guys
  raised now save the classes that were taken say like 2 years ago, right and as obviously I cannot delete those classes because they
  have to be kept for record. But what is the point of keeping them on my life hard drive because
  my life hard drive is where I do. My current tasks, right? So rather than keeping it
  on my life hard drive I say, okay. Let me keep it in a CD or a pen drive and keep
  it somewhere where I can take it out when I actually
  need them. Right? So this is the concept of taking a
  backup now similarly. If you want to take a backup in as your say you have your virtual machine and
  you have stored a lot of files on your virtual machine, but you think okay.
  I don't need these files anymore. Or maybe I don't need you
  file it as of now, I might them need them later.
  So why do spend that much on the stories that
  you're taking on the virtual machine right rather than storing the in frequently accessed data.
  
  Why not put more frequently exist. So what you
  can do is the in frequently accessed data that you have
  in your machine on the cloud. You can actually take a backup of
  that and store it in the backup service. Now, why will you store it in the back of services?
  Because storage is more cheaper when you talk
  about the backup servers because obviously first of all, they'll use magnetic tapes or they'll use ssds or something like that
  to store your data now, why is it cheap is because obviously it has a downside
  that the response time of the time to retrieve the files from a backup service is obviously more.
  For example, if you are stored everything in your virtual machine,
  you can like go to that particular folder access that file and that is it
  right. But if you have stored in the backup service,
  the retrieval actually takes time, but it is worth it because you don't use that file every
  day, right? You won't be using it and also you're paying less so it doesn't pinch you that much because you're paying less and you
  are not using that file very Yes, well, so why not put it
  in the backup service? So this is what the backup service is all about.
  Now today in our implementation. We are using the blob storage for obvious
  reasons that we I want to store my image files, right? So I not store it on the back up obviously and
  not show it in the queue storage As Told in the blobstore
  it because that is what that service is meant to do.
  Now. The next service from Azure is the MySQL service from Azure.
  It is basically a MySQL implementation on the LG.
  Our infrastructure was right, so you Can use any database you want another you have an SQL service, which is purely SQL.
  So if you're comfortable with that, you can use it.
  I am using MySQL for my use case today because that is the way I have quoted my application to be right.
  
  So it is just personal choice. The next service that we are going to talk about is auto-scaling
  and load balancing. So like I said load balancing is when you want to equally distribute your Among the number of servers that are running that time and auto-scaling is actually scaling up
  the number of servers that you're using according to the traffic that is coming onto your website.
  So you can actually set a metric that so many obviously when more
  traffic is coming onto your website your CPU utilization will increase because you have to process more requests now.
  Yeah, so your server will be processing more requests
  and that is the reason your CPU usage will He's so you can actually set a metric.
  Let's say my CPU usage when it increases 60 or 70% increase one more instance or
  increase three or four more inches high. So it
  is based on your personal use. So this is what order scaling is all about.
  And obviously when you using Auto scaling, the number of servers is
  changing constantly, you need a load balancer along with it, right the load balancer so that say you have six or seven servers which are running right now and
  say the traffic decreases and it sees okay now the sea Utilization is going down.
  So it will reduce the number of servers.
  Right? So when it will reduce the number of sources do load balancers should identify.
  Okay, though. They were seven servers before
  now there are like three so you'll be Distributing the
  traffic according to those three servers, right? So the load
  balancer actually pays a very important role in the order
  scaling process having said that so this is how all this killing actually works.
  So say you have one server, right and the usage increases it
  goes on to become two servers and then again the usage
  increases it becomes 3 service right now when the users decreases these three servers can be
  reduced to one server or can be reduced to so so this
  is a diagram representation of what or scaling is.
  We talk about load balancer. Like I said, so load balancer is
  a very crucial part of Aura scaling process because load balancer is the
  part which actually distributes the traffic according to the
  number of servers that are running at that time. All right.
  So this is how the process Smokes the traffic comes on to the load
  balancer and the load balancer sees how many servers
  are running and distributes traffic according
  to that. All right. Okay. So we're done with the services.
  These are the services that we'll be using today.
  So now we will see how we can launch these services in the has ER
  user environment. So guys will talk about the Apsos first.
  We'll see how we can launch an app service in the as
  your UI. Okay, let me show you the user interface for a year now.
  So guys this is how the user interface for as your looks
  like. You have all the services listed here on the
  left side. Right? And this is the dashboard. This is called the dashboard whatever Services you launch.
  You can pin it here for basically getting accessed quickly.
  It is just like a desktop on your computer which has all the shortcuts in everything and this is
  what the dashboard is actually used for. All right. Having
  said that let's see how we can launch the
  app. So In Azure, so first you will click on app Services as you can see from here.
  
  You can click on app services and moving ahead. Once you have clicked on app Services.
  You will reach this plate click on create app
  services and then you'll click on web app and that is it.
  Let me show you how you do that. So you'll click on app Services click on create app Services you
  go down click on web app. And over here as you can see after this, you
  will reach the screen when you will see that you have four options.
  You can either code your website in.net PHP node.js or python. So if it is either of these four languages,
  you don't have to do anything. You just have to upload your code in this web app that you'll be creating and
  your app will be deployed automatically without installing any software
  without doing any configuration Justice, right?
  Okay. So once you have reached this page You will click on create.
  
  So let's click on Create and then you will reach the screen. So now you
  have to give your application some name. So let us give us this name as in Eureka - 0 1 so see that everything
  is fine. So this subscription is pay-as-you-go Resource Group is something which
  you can create or you can use existing. So Resource Group is something it's a
  group of all the resources, right? So if you put if you are it
  will be creating a storage. Count will be creating database
  account. We are creating an app. So it's right. So all of this will come under one group.
  It can be clubbed in one group and will be called as resource
  for any changes that you want put across the group
  you can do to the resource Group. All right, we'll be discussing in detail.
  What a resource Group is in the further modules, but for now all you should understand is that a group of resources is called a resource book.
  
  So if you have an application and just utilizing
  say three or four resources, it's better to put those
  resources. Under one group. All right. So this
  is about that. Then you have the app service plan. So app service plan is something as in what kind
  of computers you use and everything. So let's create a new plan for
  you so that you understand it better under the pricing tier.
  This is the main part that you have to select guys.
  You can select the app service plan it can give it some name.
  Let's give it as a service - 1. All right, and this
  is my app service plan. You can select what kind of plan you need.
  Let me see. Like the basic plan as of now and click on select
  right and then click on OK. So this was about Apsos plan. You can click on application insights which basically gives you the monitoring tools for now.
  Let's not discuss it. Let's not go into it. We'd be discussing it later.
  And now let's click on create. So I am taking the PIN to dashboard which will basically create a shortcut on a dashboard to this application comes in handy.
  And that's it guys. You will click on create. Alright, so now my application is being created.
  Okay, so all right why my web app is deploying.
  Let me go back to my slide and let's jump onto our next service which is blob storage.
  So like I said blob storage just like a file system.
  You need a file system to show your files, right? So
  that is what the blobster is all about. Let's see how we can create a blob storage
  instance in Azure. So you will reach this is the dashboard you reach the screen. You
  will click on storage accounts. Once you have clicked on Story the council click on ADD.
  And that is it guys. Nothing much acquired. Let's go ahead and do this I go here.
  I'll click on storage accounts. I will reach
  the screen and click on ADD and I will start entering the values.
  So let's give it the name called Eureka - 0 1 so this is taken. Let's
  give it a name as well as your I do. Write this name is available.
  All right, the performance should be standard because this is a demo replication is
  not required. So I'll say locally redundant Storage storage
  service encryption should not require secure transfer is not required and subscription is pay-as-you-go.
  Okay Resource Group. Let's select a director - 0
  1 because this is the resource Group that I selected earlier, right and let's pin it to dashboard.
  click on create Alright, so my web app has been deployed already and my
  storage account is also being deployed. All right, so this was about
  it. Let's go on. Let's see for our MySQL. So for MySQL, let's see what all we have to do.
  
  So we will click on you. We will click on databases and then we'll click on as your database for MySQL.
  
  All right, and that is about it. Let's go back and do that.
  So we'll click on new. The search for as your database.
  for MySQL All right here this so I click on this and I'll click on create.
  So here it is. I have to enter the server name. Let's enter the server name as Eureka - 0 1 it is available.
  It's good. The resource Group should be the same.
  So let's select a riruka - 0 1 so admin login name.
  Let's give it as any Rekha password. Let's give it any Rekha one,
  two, three, four confirm the password and Eureka one, two, three four, and it is asking
  me some special characters or let me add the special character as well.
  Okay. So basically you cannot have the login name and your password.
  
  So let me change the password to add you one two, three, four exclamation same in the confirmation. All right.
  So this is available. Now the location sounds introduced
  version is 5.7 pricing tier. Let me see if there is something more or less.
  All right. I think this I click on OK. Bennett dashboard and
  click on play. It's pretty simple guys. You would know when you will do the Hands-On on yourself.
  So the pricing tier can be the minimum if you are using it for demo
  or if you're creating an application, which is for global
  scale application huge can choose the pricing Theory according
  to that. Alright while it is deploying. Let's move ahead.
  So let's come onto the auto-scaling part now. So basically we have to configure our web app to order
  scale as and when required It so let's see how we can do that.
  So let's understand the types of Auto scaling first.
  So basically there are two types of scaling one is called horizontal scaling
  and one is called vertical scaling. So horizontal scaling is when you are
  increasing the number of servers that you require say, you don't have an i7 server.
  For example. All right. Now the usage goes up so you take to i7 servers and if it again goes up you take 3i7 SOS, right.
  
  So this is what horizontal scaling is all about right?
  Let's come onto vertical scaling now. So vertical scaling is when you are increasing the capacity or the configuration of
  your system say you were using an I3 system before right the traffic increases.
  So now you're using an I-5 system the traffic increasing now you're using the i7 system.
  So you are having only one machine but you're increasing the
  configuration of your system, right? So these are the two Types of scaling which exists in auto-scaling also the other way is manual scaling so you can also
  manually scale up your in the number of instances or the configuration of your system.
  
  Right? So the way to do that is to manually go into the service
  change the pricing tier and you are said this is how you manually scale auto-scaling.
  I'm going to tell you in a couple of you slides. Also guys when you are
  auto-scaling like I said load balancing is Quickly attached
  to it. Alright, so when you would be orders killing in a web
  app, you don't have to configure the load balancer. The load balancer is configured automatically
  and said automatically for you to be used right because it doesn't make sense to use or scaling and not use load
  balancer. And that is the reason as your has automated the process of attaching a load balancer when you
  using orders Right Moving ahead guys. Let's see how we can launch this instance.
  So guys first you will click on app Services. You will go to your particular.
  
  Instance that ER have launched you will go to scale out and you will click
  on enable auto scale. All right. So let's do that.
  
  We will go to app Services which is here. So this is
  my instance. I have launched I click on idea raiga
  - 0 1 I'll go down. And as you can see I have two options.
  I have scale up and I have scale out when I click on scale up.
  You see the pricing tier so I can increase the configuration of my system right?
  
  But this is not about what I want. I want to scale out which is I want to increase
  the number of instances running right now, right? So so it says Auto scale is not supported
  for basic chair of web apps. Okay, so let me change my configuration. Alright, so
  if I go to scale out now, you can see that I have the option to enable auto scale.
  So I will click on enable auto scale and then let's give it a
  name. Let's give it a name as any Rekha Auto.
  Alright, so my auto scaling property name is Erica Otto.
  The resource Group is a Eureka - 0 1 right.
  So now you have an option to Scale based on a metric which is based on some statistics.
  Like the CPUs is or the memory usage or anything.
  Right? And the other one is scaled to a specific instance count.
  So for example, whenever the traffic increases say you were one instance now like increased five instances.
  All right. So these are the two options will go with Scale based
  on a metric and scale out in scale in your instances based on Metric.
  All right. So let's add a rule. Let's add the rule as
  in what we want. What kind of metric do we want to? Monitor and
  scale according to right? So as you can see the time aggregation is not something we
  should be worried about. Okay guys, so these are all the metrics that you can actually monitor and
  scale according to you can scale according to the memory percentage.
  You can scale according to disc, uh dpq data in and out,
  right? So let's for now keep it simple and scale according to CP percentage right time.
  I'm is not something you should be worried about and
  the operator. All right, so what should be the condition so should it be greater than or should it
  be greater than or equal to let's keep it at greater than or equal to.
  So whenever the threshold is greater than a whenever the CPU Z
  will go greater than or equal to 70 for 10 minutes so you can set this as say
  two minutes, right? Okay. Let's see. It says that it should be
  between 5 and 7 2000. Get let's keep it at five increase count by.
  So let's see what our options we have here. So you can increase by percentage.
  You can increase by count to as in if you were one. You can increase it to 10, right and you can decrease the count or you can decrease the
  person by as well. Alright, so when you are auto-scaling guys, you have to set two rules one
  is the rule to increase R. Obviously one rule is there to decrease so whenever the traffic goes down you have to decrease
  Reese your instances as well. So for now we are setting the increase rule so let's set the increase count by option. So how many instances should increase I think one is a fair
  number and cooldown is something that is actually there when you are say you
  are asked you right now, right and then say you order scaled one minute back.
  And again the CPU usage goes up. So rather than going on and
  Filling up again. What you can do is you can wait for 5 minutes and watch the metrics right because it doesn't
  happen in a second that your CPU usage will go down because there are a lot of services
  which are actually running right so you can beat once your
  new server has been deployed. You can wait for the traffic to be transferred to that server
  as well. And then you can see the metrics go down right for that.
  We keep something called cool down minutes, right? So we have
  the default is for Five, let's keep it at five only and now this
  is it guys. There's nothing else to configure. Let's click on ADD.
  Alright, so as you can see, this rule has been said, let's add one more rule to decrease.
  So the CPU percentage is fine. The operator
  should be less than or less than right. So
  whenever the threshold is less than 50% Decrees
  count by one instance and let the cool down be this much.
  
  Alright. So again, the cooldown logic goes here as well. Say you decrease
  an instance. And again your CPU is still low because it takes time for your traffic could to
  get transferred to the server number. It has the keys down to right.
  So let's keep the cooldown in it. So we'll click on our now.
  
  All right, so we have added the auto scaling group.
  
  Hello guys. This is a there's nothin

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