The Software Engineering Institute's (SEI) Capability Maturity Model for Software" (CMM) provides a well defined paradigm for software process improvement. Cleanroom software engineering provides well defined theoretical foundations and practices for software specification development, testing, and certification. The principal focus of the (X.4M is on management and organization. The principal focus of Cleanroom is on technology and engineering discipline. De SEI has completed a study that maps Cleanroom into the CMM. The mapping shows that Cleanrooim and the CMM are fully compatible, and that the technical practices of Cleanroorn can be electively integrated into the management practices of the CMM. The engineering discipline embodied in Cleanroom provides a firm foundation for project management, as illustrated in a software testing example.