Information and Monitoring Services. Information and Monitoring Services (IMS) provide a mechanism to publish and consume information and to use it for monitoring purposes. The information and monitoring system can be used directly to publish, for example, information concerning the resources on the Grid. More specialized services, such as the Job Monitoring Service and Network Performance Monitoring services can be built on top. Major components of gLite IMS are: BDII, R-GMA and Service Discovery.