====== CloudFormation ======

**What it is:** Infrastructure as Code (IaC) service to create AWS resources using templates.

**What it’s for:**
  * Deploy consistent infrastructure repeatedly.
  * Track changes and roll back if deployment fails.

**Key ideas:**
  * Uses templates (YAML/JSON) to create [[aws:ops:cloudformation:stack|Stacks]].
  * Supports [[aws:ops:cloudformation:change-set|Change Sets]] for previewing changes.

**Exam cues:**
  * “provision infrastructure via template” → CloudFormation.
  * “repeatable deployments” → IaC.

**Hard words:**
  * *infrastructure* /ˈɪnfrəˌstrʌktʃər/: hạ tầng
  * *template* /ˈtemplət/: mẫu
  * *provision* /prəˈvɪʒn/: cấp phát/tạo tài nguyên
  * *rollback* /ˈroʊlˌbæk/: quay lui