A system provides cloud-based identity and access management. The system receives a request from a client for an identity management service, authenticates the request, and accesses a microservice based on the request. The system determines, based on the request, a tenancy of the client, a tenancy of a user, and a tenancy of a resource. The system retrieves data from the determined tenancies as required to process the request, where the data is retrieved by the microservice using a connection pool that provides connections to the database. The system then performs the identity management service by the appropriate microservice responsible for processing the received request.