Origin. Approach. People. Applications. Systems Analysis. Evolution. Evaluation. Bhavya Lal. Origins. developed in the 1950s at the RAND Corporation as part of a suite of techniques for supporting wartime assessments, in creating a “science of war”
(and later in social policy analysis)
SD a part of SA?
In 1961 the PPBS methodology became one of the cornerstones of the "McNamara Revolution" in the Department of Defense