Shared data remains on your network and sent to the BIM Server. Other teams link their network to your BIM Server through a secure HTTP or HTTPS connection. The BIM Server will then track objects and files that are being checked out and created by local servers. The BIM Server then communicates these changes at a bit-by-bit level to the other sites.
Once you have your local server(typically the File Server) connected to the BIM Server, you will be able to use a local application that allows you to create projects, login names, passwords, and set access permissions to a folder of your choice. Other teams will use this information to connect their local server to the BIM Server and set a folder location for the shared work. They will only have access to the folder based on read/write permissions you set for their locations login.
Because we synchronize at the server level the teams will be accessing their local data directly from their own local server. All coordination between your sites server will happen directly to and from the BIM Server. The teams see no change in how they work.