On May 8, 2013, the DoD released the major update to the Defense Acquisition Guidebook (DAG) Chapter 4, Systems Engineering. The DAG Chapter 4 is the primary reference on the use of systems engineering throughout the system life cycle.
With this release, the chapter has been restructured to provide Program Managers and Systems Engineers with life cycle phase and systems engineering technical review expectations, including a knowledge-based, technical-maturity table for key events. The chapter provides details on systems engineering technical and technical management processes and includes links to relevant policy, standards, and detailed guidance on key topics. DASD(SE) developed Chapter 4 working closely with contributors from 24 different organizations across the Department. The update reflects recent policy changes and Better Buying Power initiatives. It emphasizes the role of systems engineering in providing balanced solutions (managing the system's cost, schedule, performance, and risk) to deliver Warfighter capability needs.