A code repository is a storage location for software code, allowing developers to manage and track changes to their projects. These repositories can be hosted on platforms like GitHub, GitLab, or Bitbucket, enabling collaboration among multiple developers. They often use version control systems, such as Git, to keep a history of changes, making it easier to revert to previous versions if needed. Code repositories help streamline the development process by providing tools for code review, issue tracking, and documentation. They also facilitate continuous integration and deployment, ensuring that code is tested and deployed efficiently. Overall, they are essential for modern software development practices.