Studio Hub
Studio Hub acts as the central repository for development and from which projects can be promoted to test and production Environment Hubs. Security can per configured per Hub to match organizational needs. Hubs may also be referred to as "sites".
Typically, Studio Hub deployments are promoted to one or more Test Environments, and then to a Production Environment. This supports a formal test and release lifecycle. Studio Hub shows all deployments across environments and the project versions they came from. There are differences in user interface and functionality between Studio Hub and Environment Hubs. Each site has its own list of users. Sites may or may not have users in common.
Note: Studio Hub is a feature that requires Intelligent Advisor Generation 2.