Competitive advantage. The value chain. Five forces. Industry structure. Differentiation. Relative cost. If you want to understand how companies achieve and sustain competitive success, Michael Porter's frameworks are the foundation. But while everyone in business may know Porter's name, many managers misunderstand and misuse his concepts.

Understanding Michael Porter sets the record straight, providing the first concise, accessible summary of Porter's revolutionary thinking. Written with Porter's full cooperation by Joan Magretta, his former editor at Harvard Business...