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Disclaimer

This book is an independent study guide. It is not affiliated with, endorsed by, or sponsored by GitHub, Inc. or Microsoft Corporation. "GitHub", "GitHub Copilot", "Microsoft", and related names and logos are trademarks of their respective owners and are used here for identification and educational purposes only.

Exam objectives evolve

Certification objectives change over time. This book targets:

  • GH-300 — GitHub Copilot: the skills measured as of August 7, 2026.
  • GH-600 — Developing in Agentic AI Systems: the current agentic-SDLC skill set at the time of writing.

Microsoft and GitHub update exams periodically — typically to reflect new features and to retire deprecated ones. Always confirm the current objectives on the official study guides before you sit either exam:

🔗 Source: Study guide for Exam GH-300: GitHub Copilot

🔗 Source: Study guide for Exam GH-600: Developing in Agentic AI Systems

Preview vs general availability

GitHub Copilot and its agentic capabilities move quickly between Preview and general availability (GA). A feature described here as Preview may be GA (or renamed, or replaced) by the time you read it — and the reverse can happen too. The exams note that most questions cover GA features, with occasional questions on commonly used Preview features. Where a feature's status matters, this book flags it and tells you to verify.

Commands and configuration

This is a hands-on book: it shows real commands (gh, GitHub Copilot CLI), configuration files (instructions files, prompt files, MCP configuration), and workflow snippets. Product surfaces, flags, and file paths change. Verify any command or configuration against the current GitHub documentation before depending on it in your own environment.

Two Copilots

Throughout, "Copilot" means GitHub Copilot — the developer tool. It is distinct from Microsoft 365 Copilot, the business productivity assistant covered in the sibling book Copilot to Transformation. The exams in this book concern GitHub Copilot; do not conflate the two.

No warranty

The information here is provided "as is", without warranty of any kind. Passing an exam depends on many factors, including the current exam form and your own preparation. Use this book as one part of a broader study plan that includes hands-on practice and the official Microsoft Learn and GitHub resources.

License

Copyright © 2026 Sébastien Brochet. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license (CC BY-NC-SA 4.0). You are free to share and adapt it, with attribution, for non-commercial purposes, and under the same license.

🔗 License: creativecommons.org/licenses/by-nc-sa/4.0