GitHub Actions is a CI/CD platform that allows you to automate your build, test, and deployment pipeline directly within GitHub repositories. Unlike traditional CI/CD tools like Jenkins or TeamCity that require separate infrastructure, GitHub Actions is cloud-native and integrated directly into GitHub.

Key differences:

• Native Integration: Seamlessly integrated with GitHub repositories, pull requests, and issues
• Event-driven: Triggers on various GitHub events (push, pull request, release, etc.)
• Marketplace: Extensive marketplace of pre-built actions
• YAML Configuration: Uses simple YAML files stored in .github/workflows/
• No Infrastructure Management: Hosted runners eliminate the need to manage servers