# Concepts for GitHub integrations

Learn the core concepts that you'll need to understand GitHub integrations.

## Links

* [About GitHub integrations](/en/enterprise-server@3.21/integrations/concepts/about-integrations)

  Learn how to connect, extend, and customize GitHub with apps and tools.

* [Featured GitHub integrations](/en/enterprise-server@3.21/integrations/concepts/featured-github-integrations)

  Use GitHub extensions to work seamlessly in repositories on GitHub.com within third-party applications.

* [About building integrations](/en/enterprise-server@3.21/integrations/concepts/about-building-integrations)

  You can build integrations to extend GitHub's functionality.

* [/github-developer-program](/en/enterprise-server@3.21/github-developer-program)