GitHub Actions is a feature of GitHub that allows developers to automate workflows directly within their repositories. It enables users to create custom scripts, known as workflows, that can run in response to specific events, such as code pushes or pull requests. This automation helps streamline tasks like testing, building, and deploying applications. With GitHub Actions, users can define their workflows using a simple YAML syntax. These workflows can include various actions, which are reusable pieces of code that perform specific tasks. This flexibility allows teams to enhance their development processes and improve collaboration by reducing manual work.