====== ECR (Elastic Container Registry) ======

**What it is:** A managed registry to store, version, and retrieve container images (Docker images).

**What it’s for:**
  * Store images privately for deployments (ECS/EKS/Fargate).
  * Control access with IAM.
  * Integrate with CI/CD pipelines.

**Key ideas:**
  * Repositories store images and tags.
  * IAM controls who can push/pull.
  * Often paired with ECS/EKS.

**Exam cues:**
  * “private Docker image registry” → ECR.
  * “store container images for ECS tasks” → ECR.

**Hard words (English + IPA + Vietnamese meaning):**
  * *registry* /ˈredʒɪstri/: kho đăng ký (nơi lưu image)
  * *repository* /rɪˈpɑːzətɔːri/: kho chứa (repo)
  * *image* /ˈɪmɪdʒ/: ảnh (gói phần mềm container)
  * *tag* /tæɡ/: nhãn phiên bản