Version Control Systems (VCS) are tools that help manage changes to files, especially in software development. They keep track of every modification made to the code, allowing multiple people to work on the same project without overwriting each other's work. This is crucial for collaboration, as it helps teams maintain a clear history of changes and revert to previous versions if needed. One popular example of a VCS is Git, which allows developers to create branches for new features or fixes. When the work is complete, these branches can be merged back into the main project. This process ensures that the code remains organized and manageable, even as it evolves over time.