In one sentence
ECS offers simpler AWS-native orchestration, while EKS provides managed Kubernetes compatibility and ecosystem access.
Key points
- ECS uses AWS concepts such as Task Definition, Task, Service, and Cluster.
- EKS exposes Kubernetes APIs and fits existing K8s tools, skills, and portability requirements.
- Both can run workloads on EC2 or Fargate.
Exam takeaway
Choose based on Kubernetes compatibility versus operational simplicity, not because one stores or runs images differently.