AWS Compute Explained: EC2 vs ECS vs Fargate vs Lambda, and When to Use Which

AWS has a confusing number of ways to run your code, and the names do not tell you how they relate. EC2, ECS, Fargate, Lambda, and more, all "compute," all overlapping. Beginners pick one semi-randomly and stick with it. Let me lay out what each actually is, how much of the work AWS does for you versus you, and a simple way to decide, so you...