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external information system service provider

Definitions:

  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.
Sources:
CNSSI 4009-2015

  A provider of external 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.
Sources:
NIST SP 800-37 Rev. 2 under external system service provider

  A provider of external system services to an organization through a variety of consumer-producer relationships, including joint ventures, business partnerships, outsourcing arrangements (i.e., through contracts, interagency agreements, lines of business arrangements), licensing agreements, and/or supply chain exchanges.
Sources:
NIST SP 800-161r1 under external system service provider from NIST SP 800-53 Rev. 5
NIST SP 800-53 Rev. 5 under external system service provider

  A provider of external 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.
Sources:
NIST SP 800-171 Rev. 2 under external system service provider