"....The OODA Loop is a concept originated by military strategist Col. John Boyd of the United States Air Force. Its main outline consists of four overlapping and interacting processes: Observe, Orient, Decide and Act.
The accompanying diagram shows a decision cycle known as the Boyd cycle, or the OODA loop. It has become an important concept in both business and military strategy. According to John Boyd, decision-making occurs in a cycle of observe-orient-decide-act. An entity (either an individual or an organization) that can process this cycle quickly, observing and reacting to unfolding events more rapidly than an opponent, can thereby "get inside" the opponent's decision cycle and gain a military or business advantage.
John Boyd developed the concept to explain how to direct one's energies to defeat an enemy and survive. Boyd emphasized that "the loop" is actually a set of interacting loops that are to be kept in continuous operation during combat. He also indicated that the phase of the battle has an important bearing on the ideal allocation of one's energies.
Boyd’s diagram shows that all decisions are based on observations of the evolving situation tempered with implicit filtering of the problem being addressed. These observations are the raw information on which decisions and actions are based...."