The way I think about it is temporal and spatial control, and giving up control over them so that some common entity can optimize and drive down your costs. Wit

The way I think about it is temporal and spatial control, and giving up control over them so that some common entity can optimize and drive down your costs. With Fargate, you're giving up spatial control so you can just pay for the task resources you asked for. With Lambda, you're additionally giving up temporal control so you can just pay for resources when you're lambda is actually servicing a request. When I think about the offerings this way, I can start to decide when I want to use them because now I can ask myself "Do I need strict temporal/spatial control over my application?" and "Do I think I can optimize temporal/spatial costs better than Lambda/Fargate?".