The authoritative source for person identity data. Maintains identity data for persons across VA systems. Provides a unique universal identifier for each person. Stores identity data as correlations for each system where a person is known. Provides a probabilistic matching algorithm. (Includes MPI, PSIM, and IdM TK) Maintains a gold copy known as a Primary View of the persons identity data. Broadcasts identity trait updates to systems of interest. Maintains a record locator service.

Provides single sign-on solution for external facing VA applications. Authenticates users with CSP credentials and other externally-issued credentials (including mapping of credential to VA identity) (IBM tools)