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Computer Security Resource Center

Computer Security Resource Center

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External (information systems) Service Provider

Definition(s):

  A provider of external information system services to an organization through a variety of consumer-producer relationships including but not limited to: joint ventures; business partnerships; outsourcing arrangements (i.e., through contracts, interagency agreements, lines of business arrangements); licensing agreements; and/or supply chain exchanges.
Source(s):
NIST SP 800-161 from NIST SP 800-53 Rev. 4