Like everyone else, I pick things up from Youtube too.

One that I particularly like is this video.

@AWS Training Center

This is how an on-premise architecture would look like. On-prem just means that the application sits in data centers the company has setup.

Of course, it isn't FB's real architecture. But it's pretty comprehensive, complete with the a load balancer, video storage, data warehouse, and everything else.

@AWS Training Center

And this is how the cloud architecture would look like on AWS.

It's a mirror image of the on-prem diagram.

That's one of the things I like about AWS, there's a service for everything you need. You don't have to build it yourself, you just have to pay per use.

But of course, one of the drawbacks is the lock-in cost.

It becomes extremely convenient to spin up new services that the application grows too large to migrate out of AWS.