What it is: AWS-managed service to run and scale containers.

What it’s for:

• Deploy containerized applications without running Kubernetes.
• Manage services, scaling, and rolling updates.

Key ideas:

• Runs on:
  • EC2 launch type (you manage instances)
  • Fargate launch type (serverless containers)
• Core units:
  • Cluster
  • Task Definition
  • Service

Exam cues:

• “run containers with AWS-managed orchestration” → ECS.
• “don’t want to manage servers” → ECS on Fargate.

Hard words:

• *orchestration* /ˌɔːrkəˈstreɪʃn/: điều phối
• *rolling update* /ˈroʊlɪŋ ˈʌpdeɪt/: cập nhật cuốn chiếu