SVN, or Subversion, is a version control system that helps manage changes to files and directories over time. It allows multiple users to collaborate on projects by tracking modifications, enabling them to revert to previous versions if needed. This is particularly useful in software development, where teams need to coordinate their work efficiently. SVN stores data in a central repository, making it easy for users to access the latest version of files. It supports branching and merging, allowing developers to work on different features simultaneously without interfering with each other's progress. This ensures a smooth workflow and enhances project organization.