Git Fusion provides an enterprise version of Git that combines the flexibility and features of Git with the security, scalability, and access control of Perforce's versioning system. It allows developers to use Git workflows while also supporting larger, more complex projects. Git Fusion addresses challenges for enterprises adopting Git like managing global deployments, sets of repositories, and access control. It offers replication, no data limits, and flexible workflows. Developers can use Git as normal, while release managers and administrators gain features like proven branching models, security, availability, and scalability.