====== ECS Service ======

**What it is:** A long-running configuration that ensures a desired number of tasks keep running.

**What it’s for:**
  * Maintain availability (replace failed tasks).
  * Auto scale tasks based on load.
  * Integrate with load balancers.

**Key ideas:**
  * Service maintains **desired count**.
  * Can attach to an ALB/NLB.
  * Supports rolling deployments.

**Exam cues:**
  * “keep N tasks running continuously” → ECS service.

**Hard words:**
  * *desired count* /dɪˈzaɪərd kaʊnt/: số lượng mong muốn
  * *continuously* /kənˈtɪnjuəsli/: liên tục