The Stark Probability Engine, or S.P.E. is an upgraded and redesigned version of Iron Man 's original Pre-Play Program. Stark developed the new engine to create new battle tactics and field plans in any combat situation for him and The Avengers against The Cabal.
The Program is composed of new tactics, parameters, and algorithms which uses collected data of both the Avengers and any known opposition in order to create an adaptable and logical path to victory.
Stark developed this new prpgram to give the Avengers an edge against the Cabal. But when put to use for the first time, Iron Man overdid it and over-thought it before discovering that there's no excuse for human intuition and the human factor it self. Stark disabled the program shortly after.