GitHub Actions

GitHub Actions is the CI/CD platform native to GitHub. In 2025, it is the dominant CI/CD tool, characterized by Reusable Workflows and OIDC integration for passwordless deployments.

When to Use

• GitHub-Hosted: Your code is already on GitHub. Deep integration with Issues/PRs.
• Simplicity: No servers to manage (unlike Jenkins).
• Marketplace: Thousands of pre-built actions (setup-node, docker-build-push).

Quick Start

# .github/workflows/ci.yml
name: CI
on: [push, pull_request]