System Definition Review (SDR)
Defense
The formal review, in briefing format, for periodically deciding on updates to the system plans for development based on estimates of the program schedules and funding. The SDR summarizes candidate development plans and their potential impacts on system design, cost, and schedule. The SDR provides a systemsengineering basis for the MDA program planning activities. Following the SDR, detailed element planning will result will result in a Configuration Control Board, final trades, and program documentation in the PPBS.