This is a potential security issue, you are being redirected to https://csrc.nist.gov.
Elements of organizations describing mission areas, common/shared business services, and organization-wide services. Mission/business segments can be identified with one or more information systems which collectively support a mission/business process.
CNSSI 4009-2015 from NIST SP 800-30 Rev. 1
NIST SP 800-30 Rev. 1 under Mission/Business Segment