NIST Enterprise Architecture Model (NIST EA Model) is a late 1980s reference model for Enterprise Architecture, that illustrates the "interrelationship of enterprise business, information, and technology environments".[1]
Developed late 1980s by the National Institute of Standards and Technology (NIST), in the 1990s this reference model became widely accepted and promoted within the U.S. federal government as Enterprise Architecture management tool.[1]
It is used as one of the foundations of multiple U.S. Federal Enterprise Architecture frameworks, for example the Federal Enterprise Architecture Framework.[1]
Overview
The NIST Enterprise Architecture Model is a five-layered model allows 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.[1] This interrelation between the architecture layers is defined in the model:[2]
- Business Architecture drives the information architecture
- Information architecture prescribes the information systems architecture
- Information systems architecture identifies the data architecture
- Data Architecture suggests specific data delivery systems, and
- Data Delivery Systems (Software, Hardware, Communications) support the data architecture.
The hierarchy in the model is based on the notion that an organization operates a number of business functions, each function requires information from a number of source, and each of these sources may operation one or more operation systems, which in turn contain data organized and stored in any number of data systems.[3]
History
The origin from the NIST Enterprise Architecture Model was a NIST research project in 1989, published as the NIST Special Publication 500-167, Information Management Directions: The Integration Challenge.[2] In this project two Frameworks were proposed:
- a Zachman Framework addressing enterprise engineering; and
- a single dimensional classification of subject areas supporting Information Strategy,
This classification in the 1990s became known as the NIST Framework.
The NIST Framework was picked up by several U.S. federal agencies and used as the basis for their information strategy.[6]
In the 1990s the NIST Enterprise Architecture Model is applicated the following frameworks:
- the Department of Energy (DOE) Information Architecture [4]
- FDIC Enterprise Architecture Framework is the Enterprise Architecture framework of the Federal Deposit Insurance Corporation (FDIC).
- Federal Enterprise Architecture Framework (FEAF) : The 1999 documentation of the Federal Enterprise Architecture Framework Version 1.1 explains how the NIST Framework is used as a foundation of the FEA Framework.[1]
- NWS Enterprise Architecture : Enterprise Architecture of the National Weather Service[7]
For example
See also
References
This article incorporates public ___domain material from the National Institute of Standards and Technology
- ^ a b c d e f The Chief Information Officers Council (1999). Federal Enterprise Architecture Framework Version 1.1. September 1999.
- ^ a b Elizabeth N. Fong and Alan H. Goldfine (1989) Information Management Directions: The Integration Challenge. National Institute of Standards and Technology (NIST) Special Publication 500-167, September 1989.
- ^ John O'Looney (2002). Wiring Governments: Challenges and Possibilities for Public Managers. Greenwood Publishing Group. p.67.
- ^ a b Federal Aviation Administration (1998) Federal Information Architecture Initiatives. February 1998
- ^ OIG (2005). Implementation of E-Government Principles. May 2005
- ^ "Exclusive Interview with John Zachman" by Roger Sessions. In: Perspectives of the International Association of Software Architects. April 2006.
- ^ Bobby Jones (2003) NWS ENTERPRISE ARCHITECTURE.
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