Enterprise architecture

 - Enterprise architecture is defined by three unique groups- (1) The Department level business function and information flow; (2) The supporting technologies; and (3) The crosscutting security architecture. The business is defined through the functions performed and supporting information flows; the technology by the data, application, and technical infrastructure layers; and the security architecture that affects all layers. In the architecture, the existing state is the as is or current architecture, whereas anticipated changes to meet the Departments future needs are represented in the to be or target architecture. A transition plan is included in the enterprise architecture to identify how the gap between the as is and the to be states will be closed. Finally, a technical reference model and standards profile is included to provide the supporting technology   311 with appropriate technical standards. Also called EA.

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