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Computer Security Resource Center

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EA

Abbreviation(s) and Synonym(s):

Enterprise Architecture

Definition(s):

  The description of an enterprise’s entire set of information systems: how they are configured, how they are integrated, how they interface to the external environment at the enterprise’s boundary, how they are operated to support the enterprise mission, and how they contribute to the enterprise’s overall security posture.
Source(s):
NIST SP 800-128 under Enterprise Architecture from CNSSI 4009
NIST SP 800-30 Rev. 1 under Enterprise Architecture from CNSSI 4009
NIST SP 800-39 under Enterprise Architecture from CNSSI 4009

  A strategic information asset base, which defines the mission; the information necessary to perform the mission; the technologies necessary to perform the mission; and the transitional processes for implementing new technologies in response to changing mission needs; and includes a baseline architecture; a target architecture; and a sequencing plan.
Source(s):
NIST SP 800-53 Rev. 4 [Superseded] under Enterprise Architecture from 44 U.S.C., Sec. 3601