====== ECS Task Definition ======

**What it is:** A blueprint describing how to run containers (image, CPU/memory, ports, env vars, IAM role, logging).

**What it’s for:**
  * Define container runtime settings consistently.
  * Version and update deployments.

**Key ideas:**
  * Includes:
    * container image (often from ECR)
    * resource limits
    * networking mode
    * task role (permissions)
  * New revision is created when you update it.

**Exam cues:**
  * “define container settings and resources” → task definition.

**Hard words:**
  * *blueprint* /ˈbluːprɪnt/: bản thiết kế
  * *revision* /rɪˈvɪʒn/: bản sửa/phiên bản