Mixed-mode authorization metadata manager for cloud computing environments

Methods and apparatus for a mixed-mode authorization metadata manager for cloud computing environments are disclosed. A system includes a plurality of service managers coordinating respective distributed multitenant services, and a metadata manager. In response to a metadata request for an authorization entity, the metadata manager identifies a first and a second service manager coordinating services in use by a client account with which the authorization entity is affiliated. The first and second service managers implement respective authorization APIs. The metadata manager provides composite authorization metadata of the authorization entity based at least in part on (a) service authorization metadata provided by each of the first and second service managers and (b) identity authorization metadata provided by an identity manager.