Realm Service
The realm service contains the complete realm definition, which configures communications among all client applications.
The realm service distributes to each client a version of the realm definition that is tailored for that specific client. The client process stores this tailored realm definition in a realm object.
Client applications and services send their operating metrics to the realm service. To use metrics data, see Catalog of Metrics and Log Service.
Also see: Realm Service Configuration Parameters.