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Hello.

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Welcome back.

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Now let's talk about Elastic Load Balancing very important and it integrates with a lot of public services

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and very important for building scalable full tolerant solutions on it obvious weather beat Internet

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facing load balancing to scale the tiers or the applications facing the Internet or their Web sites

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or be it an internal application or internal database that you would like to load balance because you

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have multiple instances of it within each of us.

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This is very crucial to understand and find out.

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And of course it is very important for whatever exam that you would like to sit for in yes.

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So let's see what we are going to study exactly in this section.

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So the agenda for Elastic Load Balancing includes three types of load balancers the classical one the

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classic load balancer or COLB.

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And that is the old one that was launched back in 2009 and I think now is being phased out by NWS and

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it is the the last recommendation by Italy s to use among the different load balancers because the new

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ones which are the application load balancer or L.B. and the network load balancer are much better much

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better in terms of performance.

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They are much cheaper in terms of pricing and also they are much rich in terms of features.

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So the application load balancer will operate at the 7 Layer 7 of the ISI model or the TTP and it's

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to be a layer basically and the network load balancer will function at the TTP layer or Layer 4 of the

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same model.

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If you recall from the classic the classic load balancer operates at Layer 4 and at least 7 as well

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but with less performance and much less set of features and is more expensive as well.

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OK.

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So let's dive into the D section and find out what information do we have to gain and acquire.

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All right.

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So let's go ahead.

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I'll see you in the first.