This document discusses identifying competitors and understanding differences between offerings. It begins with an overview of marketing management concepts like demand, power, cost, margin, and allocating marketing expenses. It then covers positioning and perceptual mapping, including coming up with a positioning statement that identifies the target segment, competitor set, and core value propositions. Methods for developing perceptual maps are examined, including similarity-based multidimensional scaling and attribute-based factor analysis. An example perceptual map of the erectile dysfunction market is shown. Group exercises have respondents analyze competitor sets and perceptual maps.