AWS-Hey guys this is Hemant from Edureka, welcome to this session on what is AWS? So without wasting any time let's skip on to the agenda to see what all we'll be covering in today's session.

    Artificial Intelligence

    So we'll start this session by first discussing what is AWS

    and then move on to discuss the different companies who

    are using the enterprise service,

    once we're done with that

    we'll move on to discuss

    why companies big or small are using AWS or any another cloud provider for that matter right so once we'll discuss what is AWS and why AWS is important, we'll look at some of the basic services that

    AWS has to offer us and then move on to discuss the AWS doable infrastructure,

    once we'r

    e done with that we'll

    end this session

    by discussing the various pricing options provided by AWS.

    Right, so guys this is our agenda for today I hope it's clear to you now let's go on and discuss the first topic of Today's session which is what is AWS so guys AWS is Amazon Web Services is a subsidiary of

    as a world leader in cloud computing market right

    was launched

    way back

    in 2006 when

    no company had the cloud computing business model it took the risk and now today 70% of the whole

    cloud computing market is residing on AWS so now you can imagine how big the professor's right talking about companies who are on AWS let's look at some of the companies some of the prominent companies were using the AWS infrastructure


    so these are some of the very popular companies like Kellogg's Robbie air B&B Chen electricsNetflix and Amazon which are using the AWS infrastructure for their operations now Netflix and Amazon

    are completely dependent upon the AWS infrastructure now you can imagine if these two companies which are so big and though the whole world is using it even your application is going to share the same infrastructure

    With these apps so you can imagine that your application is

    in safe hands right you can be assured

    with that having said that


    let's move on to discuss but why do companies use AWS

    and what's the advantage of having cloud computing technology with you right

    so let's shed a light on that and for that let's take an example say you think of you know starting a business and say your business is you think of launching the Instagram

    application and you have the application ready now you have to make it available to the world so the first thing that you have to do is you have to invest some money buy some servers and upload your application on it and your application is up

    and ready right so you start with a small user base and you say ok

    so in one month or so I can expect that so-and-so users will be there

    but your plan doesn't go according to your will and what happens in overnight your application becomes so viral that there are millions of users were trying to access

    your application now so the servers that you had and now very overburdened

    with the kind of traffic which is coming in and you get very anxious as to what to do

    console aws

    so what you do you invest some more money by some more servers and now the situation seems to be a little normal right but guys servers are machines we should not forget about it right

    and they have bound to break down so finally what happens is your servers go down they go haver and your application is

    so to fix this again you had to hire a maintenance team which is now going to manage your servers

    for you that is anything kind of server upgrade which



    any kind of software up pass

    which has to be put in and when your server goes down replacing

    it with a new server all of that

    is now going to be managed

    by the maintenance team right to the kind of attention

    that was required for

    you to give to

    your application

    it could not get that attention because how are we our attention was towards the infrastructure side which is understandable right so these are the problems we folklore computing and one fine

    day the bills came up and said but why don't you use my servers right I have a stack of servers in my warehouse why don't you use some of them right and the best thing about it is that you know you know

    how to bias the servers from me you can just rent them from me use them for the time you wanted to

    and give them any time you want to say you give tome up to five hours you just pay for the five hours time that you used it for right at the same time


    you don't have to worry about the maintenance right I will do the maintenance for my servers

    and with this was like you know if the god came in

    and said let me help you it was like that

    so this was a very good deal

    for you because now you not spend money on buying servers

    and not spending money on the maintenance team everything

    is being managed

    by AWS and at a very cheap price of Parada pieces right

    so it's very awesome so moving forward we have understood why you know

    AWS companies are adopting AWS or any other cloud platform and what exactly is AWS it let's move on to discuss the service with now


    so let's take an example again here let's take the example of a website so this is a skeleton architecture for a very normal web site that is there right how does it function the user first he goes onto a website he goes onto the internet

    and he types in a web address right that web address then goes to a DNS server that DNS server basically gets that converted into an IP address that IP address points to a load balancer that load balancer, in turn,

    you know distributing the traffic among many of the servers and you end up on any one of these servers this is how it happens right

    and now this server is again connected to

    a relational database

    and this relational database is

    basically having all the information which

    is required

    for your website

    and also with these entities that are your database

    and your servers are inside a network

    AWS amazon

    so that they can communicate with each other right so these are the basic entities which are there in a cloud computing world right now taking the same problem as before that you know what suddenly

    a whole lot of user group comes in and your servers become overburdened now how do you take care of that

    so you don't have to take care of anything cloud computing

    you know the cloud mobility model is herbs then it'll take care of itself right so it automatically senses

    that you know the servers are getting overburdened

    it adds a solar automatically

    and now your situation becomes normal right

    so this is how the cloud computing board is going to help you out we discussed this already righ

    t but now having seen this architecture how it works now let's look at how these services or how these components will look when you took it from the

    AWS perspective right so when you talk about AWS services the DNS server

    that we discussed is called route 53 this


    server the web servers that we discussed our issue servers the relational databases are yes the network in which these components

    will be closed-in is BPC and the load balancers again load balancer and the property which increases the number of servers and know is them according to traffic is auto-scaling right

    what is AWS lambda

    so these are some of the basic services offered by AWS

    and these are awesome values right

    so these were the services that we were to discuss moving forward now let's discuss the global infrastructure that

    AWS has to offer now AWS provides these many services throughout the globe it has a global presence right and these orange dots are the regions that AWS has right each region has multiple zones and zones are nothing

    but huge data centers with a lot of servers right so probably when you choose America when you choose the US so probably you will be ending here somewhere around here right

    if you choose the region 1 region is this and the other region is this one zone would be one circle and this is how it functions rights in all there are 18 geographical regions around the world and in those regions

    we have around 50 availability zones like I said a 50 huge stay the centers around the world that are at your disposal right

    but why will he need global infrastructure is a question right so say let me take the

    same example forward the website servers and these servers are

    now distributed among different places throughout the world

    AWS certified

    now what advantage does it give you first of all it helps in the disaster recovery kind of situation

    for example this server was done you all again have these

    two servers to solve your traffic

    flow right so this server goes on because of a power outage or any natural calamity your application is still up because it has been hosted in different regions right this is one advantage

    the second advantage is that it serves the purpose of users from different countries, for example,

    you are in this country and in your trying to access your website probably

    you can access it from this server right rather than having your servers at one central location which will not only have more latency that is response line if a customer is out of the country

    but also it's a very bad measure to take when we are too concerned about disaster recovery right so this is the reason that AWS has a global presence and they have a global infrastructure so it is there because

    so then your Chalmers can have the lowest latency possible and also you can implement the best is ask recovery

    measures all right having said that let's now talk about AWS pricing there is now double pricing is amazing

    AWS Lab

    so like we discussed so we have a per our billing kind of system right

    the pricing is also region-specific in the sense that each region has different pricing for different services they don't differ much

    but so they are different from each other for each region so you can choose a region according to your preference also there's a scene called reserved instances so many choose reserved instances you save up to 90% costs

    so when you say reserve this a basically means you rent the server for a particular term say a one-year term or a three-year term

    and when you do that when you compare it with on-demand pricing you save up to 90% which is awesome right

    and also there is an option for spot pricing as well wherein

    you get incredibly low prices by bidding on servers for particular price rights you're bid on a server for saying I want to sell for $2 if a server is available you get it right you use that server until the server price goes up

    and once it goes up the server is taken automatically for

    you right it could be helpful for workloads wherein


    the work is not that urgent but

    you want to get it done

    in the minimum cost possible right

    so it is helpful with that and with that guys,

    we come to an end to the AWS overview thank you guys for attending to this session.


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