It's not that it's lacking at all, but on GCP I just click a few buttons and Google spins a Kubernetes cluster up for me. They handle my node OS upgrades for me

It's not that it's lacking at all, but on GCP I just click a few buttons and Google spins a Kubernetes cluster up for me. They handle my node OS upgrades for me. They've also got a really slick in-place rolling cluster upgrade setup. The primary difference on AWS is that you are doing all of this yourself instead. This isn't bad for everyone, but I've got the option of having Google do it in addition to doing it myself on GCP. As a bonus, Kubernetes abstracts a lot of inter-provider differences away. I can move between providers more easily, or even run across multiple providers (cluster federation). ECS is severely limited and slow to evolve, by comparison. They got to market first, but their overall container strategy is now inferior to GCP's. They're still ahead in many other ways, though. I just feel like containers are GCP's sweet spot.