IEEE 1220-1994

This standard defines the interdisciplinary tasks that are required throughout a systems life cycle to transform customer needs, requirements, and constraints into a system solution. The standard is intended for guiding the development of systems (which includes computers and software) for commercial, government, military, and space applications. This standard applies to a performing activity within an enterprise that is responsible for developing a product design and establishing the life-cycle infrastructure needed to provide for life-cycle sustainment.