An extensible deployment system is disclosed that provides for flexible deployment and centralized management of a scalable communication system. The scalable communication system may be segmented into multiple groups of services, e.g. multiple solutions, that may be deployed across one or more servers. The groups of services may each access separate databases in a single database instance that may allow for the groups of services to be deployed and upgraded independently. A management interface may be provided that allows for centralized management, and deployment, of all of the groups of services, irrespective of the independent upgrade paths of the groups of services. The management interface may include a local authentication system and may also be interoperable with one or more external authentication systems, such that users may use login credentials of an external authentication system to access the management interface.