NIST 800-53 REV 5 • IDENTIFICATION AND AUTHENTICATION
IA-4(6) — Cross-organization Management
Coordinate with the following external organizations for cross-organization management of identifiers: {{ insert: param, ia-04.06_odp }}.
Supplemental Guidance
Cross-organization identifier management provides the capability to identify individuals, groups, roles, or devices when conducting cross-organization activities involving the processing, storage, or transmission of information.
Practitioner Notes
This enhancement requires coordination of identifier management across organizations — when you work with partners or agencies, identifiers need to be managed consistently.
Example 1: Use Azure AD B2B collaboration to manage external partner identities in your directory, maintaining a clear record of which external organization each user belongs to.
Example 2: Establish a federation trust with partner organizations using SAML so their users can authenticate with their home organization's credentials while you maintain control over authorization.