5. Apply Modern Development Practices (10-15%)

Beyond hosting code and conversation, GitHub increasingly does work for you — running automation on every push, suggesting and generating code with AI, and spinning up entire ready-to-code environments in the cloud. This phase covers GitHub Actions, GitHub Copilot across its tiers, and the two ways to get a working dev environment without installing anything locally.

Think of github.dev and Codespaces as two very different answers to "edit in the browser" — treating them as interchangeable is exactly the confusion the exam tests. ⚠️ Exam Trap: github.dev has no compute behind it and can't run or test code, while Codespaces provisions a full cloud dev container that can.