What it is: A managed build service that compiles code, runs tests, and produces build artifacts.

What it’s for:

• Build and test applications automatically.
• Create container images (often pushing to ECR).
• Reduce need to manage build servers.

Key ideas:

• Builds run in isolated environments.
• You define build steps in a buildspec file.

Exam cues:

• “compile and run tests automatically” → CodeBuild.
• “build Docker image and push to ECR” → CodeBuild + ECR.

Hard words:

• *compile* /kəmˈpaɪl/: biên dịch
• *artifact* /ˈɑːrtɪfækt/: sản phẩm build (file đầu ra)
• *isolated* /ˈaɪsəleɪtɪd/: cô lập
• *pipeline* /ˈpaɪplaɪn/: chuỗi công đoạn CI/CD