Project Matrix was developed by the Critical Infrastructure Assurance Office of the Department of Commerce. A Matrix review identifies the critical assets within an agency, prioritizes them, and then identifies interrelationships with other agencies or the private sector. This is largely a vertical view of agency functions.
To ensure that all critical government processes and assets have been identified, once reviews have been completed at each large agency, OMB will identifies cross-government activities and lines of business for Matrix reviews. In this way OMB identifies both vertically and horizontally the critical operations and assets of the Federal government's critical enterprise architecture and its relationship beyond government.