Fargate is nice but expensive. Run through the numbers for your app.

I’m moving away from ECS and going to EKS. The rationale is k8s has a significantly larger user base and I will benefit from that.

I’m using Fargate for almost everything now, and am never going back. It’s extremely simple and easy, does exactly what it says it does, and saves me a ton of time and headaches. (I use Terraform to set up services, and CircleCI (with the ECS orb) to deploy updates.)

What happens with Fargate if you need to SSH into the underlying instance? I haven't used it myself, and I'm not sure that it truly abstracts away the EC2 instance, but the description of Fargate always made me assume that to be the case.

I assume eatonphil is correct, but to be honest I’ve never even tried, and in my view that’s actually part of the point: full commitment to immutable infrastructure, made really easy. If something needs to change, I tweak the Dockerfile or the task definition or a config file and redeploy. No more SSH.

There is no underlying instance, it's a fully managed service.

I’ve used it for both running a website and backend batch processing, and it has worked great so far.