Or just not as badly.

at something AWS scale something is always on fire, they probably measure disk head crashes per second, and they're supposed to insulate it from their clients with layers of redundancy. If those layers are working, they're doing it okay.

Above those layers is a ton of jank, e.g. Elastic Beanstalk. But my understanding is the fundamentals on AWS - compute, storage, networking - are pretty much rock-solid.