Git is primarily used for version control in software development. It allows developers to track changes in their codebase, facilitating collaboration across teams. Using Git, multiple developers can work on the same project without overwriting each other's changes, enabling features like branching and merging. It records the history of changes, making it easy to revert to earlier versions if needed. Additionally, Git supports distributed repositories, meaning each developer has a complete copy of the project, which enhances collaboration and code integrity.