The Office of Management and Budget on Aug. 26 released a revised version of its Technical Reference Model (TRM), smoothing out details and adding widely-used technologies to make it more useful for people developing information systems across government.
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The biggest change to the TRM is the addition of Apple Computer Inc.'s Mac OS X and Linux to the operating systems, or "supporting platforms," section of the model. In the previous version, the only platforms were Microsoft Corp.'s Windows 2000 and .NET, and Sun Microsystems' Java 2 Micro and Enterprise editions.
The technical model is intended for use along with the Service Component Reference Model (SRM). While the later outlines common services — such as back office or customer services — the TRM identifies the common technologies that are used to provide those services, so agencies can share and reuse technology investments.
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http://www.fcw.com/fcw/articles/2003/0825/web-trm-08-27-03.asp