There are so many - Elastic Beanstalk, ECS, EKS, ECS-on-Fargate, EKS-on-Fargate..and of course the huge marketing push for Serverless.
They could have the sensible way out and built EKS as the foundation of everything - makes total sense given the massive ecosystem around kubernetes. ECS and Fargate should be killed off.
https://cdk8s.io/ replaces Elastic Beanstalk ....but still basically runs on top of EKS.
The pairing of CDK8S and EKS are fundamentally enough for all usecases that AWS basically sells.