Which service offers a rich code-editing experience with support for multiple programming languages, runtime debuggers, and a built-in terminal?

• A. AWS CodeArtifact
• B. AWS X-Ray
• C. AWS CodeBuild
• D. AWS Cloud9

Answer: (D)

A browser-based integrated development environment that provides an in‑editor experience, multi-language support, a runtime debugger, and a built‑in terminal is AWS Cloud9. This service is designed as a cloud IDE, so you can write code in multiple languages, step through it with a debugger, and run commands directly in the built-in terminal—all within the same workspace. That combination of editing, debugging, and terminal access in the cloud is what Cloud9 specializes in, making it the best fit for the described features.

The other services don’t fit this use case: CodeArtifact is for managing software artifacts and dependencies, X-Ray is for tracing and analyzing distributed applications, and CodeBuild focuses on building and testing code in CI/CD pipelines rather than providing a code editor or debugger. Cloud9 brings all three core editing and debugging capabilities together in a single, browser-based environment.