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What is AWS | AWS in 10 Minutes | AWS Tutorial For Beginners | AWS Training | Edureka - YouTube
Channel: edureka!
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Hey guys this is Hemant from from Edureka, welcome to this session on what is AWS?
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So without wasting any time let's skip
on to the agenda to see what all we'll
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be covering in today's session. So we'll
start this session by first discussing
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what is AWS and then move on to discuss
the different companies who are using
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the enterprise service, once we're done
with that we'll move on to discuss why
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companies big or small are using AWS or
any other cloud provider for that matter
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right so once we'll discuss what is AWS
and why AWS is important, we'll look at
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some of the basic services that AWS has
to offer us and then move on to discuss
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the AWS doable infrastructure,
once we're done with that we'll end this
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session by discussing the various
pricing options provided by AWS. Right, so
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guys this is our agenda for today I hope
it's clear to you now let's go on and
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discuss the first topic of today's
session which is what is AWS so guys AWS
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that is Amazon Web Services is a
subsidiary of amazon.com as a world
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leader in cloud computing market right
it was launched way back in 2006 when no
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company had the cloud computing business model it took the risk and now today 70%
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of the whole cloud computing market is
residing on AWS so now you can imagine
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how big a the professor's right talking
about companies who are on AWS let's
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look at some of the companies some of
the prominent companies were using the
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AWS infrastructure so these are some of
the very popular companies like
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Kellogg's Robbie air B&B Chen electrics
Netflix and Amazon which are using the
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AWS infrastructure for their operations
now Netflix and Amazon are completely
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dependent upon the AWS infrastructure
now you can imagine if these two
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companies which are so big and though
the whole world is using it even your
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application is going to share the same
infrastructure as these apps so you can
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imagine that your application is in safe
hands right you can be assured with that
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having said that let's move on to
discuss but why do companies use AWS and
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what's the advantage of having the cloud
computing technology with you right so
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let's shed a light on that and for that
let's take an example say you think of
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you know starting a business and say
your business is
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you think of launching the Instagram
application and you have the application
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ready now you have to make it available
to the world
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so the first thing that you have to do
is you have to invest some money buy
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some servers and upload your application
on it and your application is up and
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ready right so you start with a small
user base and you say ok so in one month
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or so I can expect that so-and-so users
will be there but your plan doesn't go
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according to your will and what happens
in overnight your application becomes so
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viral that there are millions of users
were trying to access your application
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now so the servers that you had and now
very overburdened with the kind of
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traffic which is coming in and you get
very anxious as to what to do so what
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you do you invest some more money by
some more servers and now the situation
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seems to be a little normal right
but guys servers are machines we should
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not forget about it right and they have
bound to break down so one finally what
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happens is your servers they go down
they go haver and your application is so
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to fix this again you had to hire a
maintenance team which is now going to
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manage your servers for you that is
anything kind of server upgrade which is
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required any kind of software up pass
which has to be put in and when your
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server goes down replacing it with a new
server all of that is now going to be
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managed by the maintenance team right so
the kind of attention that was required
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for you to give to your application it
could not get that attention because how
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are we our attention was towards the
infrastructure side which is
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understandable right so these are the
problems we folklore computing and one
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fine day the bills came up and said but
why don't you use my servers right I
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have a stack of servers in my warehouse
why don't you use some of them right and
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the best thing about it is that you know
I you know how to bias the servers from
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me you can just rent them from me use
them for the time you wanted to and give
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them any time you want say you give to
me up to five hours you just pay for the
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five hours time that you used it for
right at the same time you don't have to
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worry about the maintenance right I will
do the maintenance for my servers and
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with this this was like you know if the
god came in and said let me help you it
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was like that so this was a very good
deal for you because now you not spend
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money on buying servers and not spending
money on the maintenance team everything
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is being managed by AWS and at a very
cheap price of parada pieces right so
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it's very awesome so moving forward we
have understood why you know AWS
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companies are adopting AWS or any other
cloud platform and what exactly is AWS
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it let's move on to discuss the service
with now so let's take an example again
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here let's take the example of a website
so this is a skeleton architecture for a
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very normal web site that is there right
how does it function the user first he
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goes onto a website he goes onto the
internet and he types in a web address
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right that web address then goes to a
DNS server that DNS server basically
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gets that converted into an IP address
that IP address points to a load
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balancer that load balancer in turn is
you know distributing the traffic among
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many of the servers and you end up on
any one of these servers this is how it
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happens right and now this server is
again connected to a relational database
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and this relational database is
basically having all the information
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which is required for your website and
also with these entities that is your
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database and your servers are inside a
network so that they can communicate
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with each other right so these are the
basic entities which are there in a
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cloud computing world right now taking
the same problem as before that you know
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what suddenly a whole lot of user group
comes in and your servers become
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overburdened now how do you take care of
that so you don't have to take care of
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anything cloud computing you know the
cloud mobility model is herbs then it'll
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take care of itself right so it
automatically senses that you know the
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servers are getting overburdened it adds
a solar automatically and now your
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situation becomes normal right so this
is how the cloud computing board is
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going to help you out we discussed this
already right but now having seen this
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architecture how it works now let's look
at how these services or how these
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components will look when you took it
from the AWS perspective right so when
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you talk about AWS services the DNS
server that we discussed is called route
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53 this servers the web servers that we
discussed our issue servers the
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relational databases are yes the network
in which these components will be
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closed-in is BPC and the load balancer
is again load balancer and the property
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which increases the number of servers
and know is them according to traffic is
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auto-scaling right so these are some of
the basic services offered by AWS and
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these are awesome values right so these
were the services that we were to
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discuss moving forward now let's discuss
about the global infrastructure that AWS
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has to offer
now AWS provides these many services
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throughout the globe it has a global
presence right and these orange dots are
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the regions that AWS has right each
region has multiple zones and zones are
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nothing but huge data centers with a lot
of servers right so probably when you
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choose America when you choose the US so
probably you will be ending here
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somewhere around here right if you
choose the region 1 region is this and
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the other region is this one zone would
be one circle and this is how it
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functions right
so in all there are 18 geographical
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regions around the world and in those
regions we have around 50 availability
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zones like I said a 50 huge stay the
centers around the world that are at
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your disposal right but why will he need
a global infrastructure is a question
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right so say let me take the same
example forward the website servers and
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these servers are now distributed among
different places throughout the world
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now what advantage does it give you
first of all it helps in the disaster
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recovery kind of situation for example
this server was done you all again have
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these two servers to solve your traffic
flow right so this server goes on
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because of power outage or any natural
calamity your application is still up
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because it has been hosted in different
regions right this is one advantage the
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second advantage is that it serves the
purpose of users from different
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countries for example you are in this
country and in your trying to access
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your website probably you can access it
from this server right rather than
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having your servers at one central
location which will not only have more
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latency that is response line if a
customer is out of the country but also
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it's a very bad measure to take when we
are too concerned about disaster
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recovery right so this is the reason
that AWS has a global presence and they
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have a global infrastructure so it is
there because so then your
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Chalmers can have the lowest latency
possible and also you can implement the
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best is ask recovery measures all right
having said that let's now talk about
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AWS pricing there is now a double
pricing is amazing so like we discussed
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so we have a per our billing kind of
system right so and the pricing is also
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region specific in the sense that each
region has different pricing for
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different services they don't differ
much but so they are different from each
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other for each region so you can choose
a region according to your preference
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also there's a scene called reserved
instances so many choose reserved
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instances you save up to 90% costs
so when you say reserve this a basically
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means you rent the server for a
particular term say a one-year term or a
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three-year term and when you do that
when you compare it with on-demand
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pricing you save up to 90% which is
awesome right and also there is an
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option for spot pricing as well wherein
you get incredibly low prices by bidding
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on servers for a particular price right
so you're bid on server for saying I
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want to sell for $2 if a server is
available you get it right you use that
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server until the server price goes up
and once it goes up the server is taken
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automatically for you right it could be
helpful for workloads where in the work
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is not that urgent but you want to get
it done in the minimum cost possible
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right so it is helpful with that and
with that guys we come to an end to the
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AWS overview thank you guys for
attending to this session I hope you
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guys learn something new today so if you
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