Technologies are described herein for redirecting service calls via endpoint overrides in a service-oriented system. A request is received for a service implemented in the service-oriented system. The request is then analyzed to identify a service key for the requested service. A service endpoint is obtained for the requested service using the service key from a configuration file. The request is further analyzed to determine if an override endpoint for the requested service is provided. If the request contains the override endpoint, a service call to the service identified by the override endpoint is invoked. Otherwise, the service specified by the service endpoint is called for the requested service.