A system provides cloud-based identity and access management. The system receives a request from a client for obtaining an access token for a user to access a resource. The system determines, based on the request, a tenancy of the client, a tenancy of the user, and a tenancy of the resource. The system accesses a microservice based on the request, and performs an identity management service by the microservice based on the request, where the identity management service includes generating the access token that identifies the tenancy of the resource and the tenancy of the user.