[[Image:FEA BRM Hierachy.JPG|thumb|320px|Other view on the [[Federal Enterprise Architecture|FEA]] Business reference model.<ref>US DOI (2007) [http://www.doi.gov/ocio/architecture/mbt/step3.htm Analyze the Business and Define the Target Business Environment]. Sept 2007.</ref>]]
The US Federal GovernementGovernment has defined a [[Federal Enterprise Architecture]] structures of the five FEA reference models<ref name="WH05"/>:
* [[Performance Reference Model]] (PRM)
* [[Business Reference Model]] (BRM)
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* [[Data Reference Model]] (DRM)
The Federal GovernementGovernment Business Reference Model (FA BRM) provides an organized, hierarchical construct for describing the day-to-day business operations of the Federal government. While many models exist for describing organizations - org charts, ___location maps, etc. - this model presents the business using a functionally driven approach. The Lines of Business and Sub-functions that comprise the BRM represent a departure from previous models of the Federal government that use antiquated, stovepiped, agency-oriented frameworks. The BRM is the first layer of the Federal Enterprise Architecture and it is the main viewpoint for the analysis of data, service components and technology<ref name="WH05"/>.
