Integration Test Bed. The product of integrating new services with existing services and core infrastructure for testing prior to deployment. An ITB release is defined as a set of functionalities that are provided by a site (gatekeeper services running on a computing element), a VO (VO specific services provided by that VO, such as a VOMS server), or another resource provider (such as a group providing a monitoring or discovery service), that may be used in the context of the ITB.