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Developed late-1980s by the [[National Institute of Standards and Technology]] (NIST) and others, the [[federal government of the United States]] promoted this reference model in the 1990s as the foundation for enterprise architectures of individual U.S. government agencies and in the overall [[federal enterprise architecture]].<ref name="CIOC99"/>
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The NIST Enterprise Architecture Model is a five-layered model for [[enterprise architecture]], designed for organizing, planning, and building an integrated set of information and information technology architectures. The five layers are defined separately but are interrelated and interwoven.<ref name="CIOC99"/> The model defined the interrelation as follows:<ref name="FG89"/>
* Business Architecture drives the information architecture
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