A system and method for providing services to multiple tenants. A system provides a gateway that acts as an intermediary between the tenants and multiple subsystems that provide resources. A management gateway handles requests to manage resources. A runtime gateway handles requests to perform operations related to the resources. A set of protocol handlers isolates the subsystems from protocols used by the tenants. A pipeline of components provides processing, such as authorization, of requests from tenants. Identification of resources is performed using a mechanism that enables multiple namespaces, which may be designated by tenants.