With ECS and EKS you get a managed master, then you set up your own autoscaling groups etc to deploy nodes (which you manage) into the cluster.
With Fargate, you get access to AWS-managed multi-tenant nodes. So, Fargate connects to either your ECS or EKS cluster and avoids the need for you to worry about managing the nodes as well.
With Fargate, you get access to AWS-managed multi-tenant nodes. So, Fargate connects to either your ECS or EKS cluster and avoids the need for you to worry about managing the nodes as well.