Lets Prepare for AWS Certified Solutions Architect Associate - 02

Here the lessons go.........

First, you should have an idea about the overview of cloud computing and AWS. So here we go..

Below is the list of topics we are going to focus on.

• cloud computing is the on-demand delivery of IT resources available from the Internet with a pay-as-you-go model

1. OnDemand 
2. Accessibility through Internet
3. Pay as you go

• Why AWS

Ok, To start this chapter I'm taking you guys to the old school IT company. Let's say some guys want to have an e-commerce startup that is having online ordering stuff.  Sure that they need to have a server to handle order requests and to respond to them. For that, they need to think about How many requests I'm serving daily. Why you need to think about that. If you estimated more than required you have to pay for resources you won't even need. Ok, let's say you get as you estimated. then you need to find a provider that matches your budget. You need to think about storage capacity. and then you need to think about load balance mechanisms. Those things may take 3- 4 months or more, 

Oh, here comes black Friday next week. Now, are you ready to handle thousands of requests? but you what you have is not that much capable. See the burden. You have to think about your resources every time. you have to estimate so accurately because it's your money and precious time. 

• You have to worry about your server maintenance.
• You have to think about the availability of your service. 
• And security. Yes in our case it's essential. You are working with customers with credit card payments and stuff.
• Network access 
• And So on.  Because this all costs your money and money is importance when you are in the business. 

That when Amazon comes to the rescue.....

• Cloud computing models (3 models).

Now, I think you have some idea about cloud computing and how it benefits. When you are going to use  cloud computing into your business you have three models. You can use any one of theese or combinations of it. 

1. IaaS(Insfrastructure as a Service)
2. PaaS(Platform as a Service)
3. SaaS(Software as a Service) 

IaaS (Insfrastructure as a Service)

Ok. I think that's enough for today.

Here are some exercises. Just Think like a old school IT guy and comeup with an idea of a cloud venture. Online Shop, Online restaurant platforms , Ordering systems. Think about how you resolve your problems, Server, storage etc.