This Service Setdefines Servicesused to discover Serversthat are available in a system. It also provides a manner in which clients can read the security configuration required for connection to the Server. The Discovery Servicesare implemented by individual Serversand by dedicated Discovery Servers. Well known dedicated Discovery Serversprovide a way for Clientsto discover all registered Servers. OPC 10000-12describes how to use the Discovery Services with dedicatedDiscovery Servers.