The Interoperability Collaboration  (Grid Laboratory Uniform Environment – GLUE) is described by the GLUE document

The Grid Laboratory Uniform Environment  (GLUE) collaboration was created in Feb. 2002 to provide a focused effort to achieve interoperability between the U.S. (iVDGL, GriPhyN and PPDG) and the European (EDG, DataTAG, CrossGrid, etc.) physics Grid projects. The  scope includes the definition of a set of software, configuration recommendations , documentation and test suites cover the basic interoperability requirements.  Software will be deployed and tested on a Grid testbed set up for this specific purpose.

GLUE management and activities are provided by the iVDGL (U.S. side) and DataTAG (European side) projects specifically.  The project reports to and gets guidance and oversight from the High Energy Physics Intergrid Coordination Board (HICB) and its Joint Technical Board (JTB), described previously.

Since the initial proposal for the GLUE project, the LHC Computing Grid (LCG) project was created at CERN to coordinate the computing and Grid software requirements for the four LHC experiments with a goal of developing common solutions.  The LCG Project Execution Board (PEB) and Software Computing Committee (SC2) have endorsed the GLUE effort as bringing benefit to the project goals of deploying and supporting global production Grids for the LHC experiments.  Accordingly, GLUE personnel in the U.S. and Europe are committed to deliver worth to the LCG and help understand the deployment and support issues resulting from its deliverables.