Book excerpt: This short, entertaining guide explains and demystifies Michael Porter's core strategy concepts with engaging illustrations, a charming and relatable cast of characters, and clear, simple captions. Here you'll find the classic Porter framework - industry structure and the Five Forces, competitive advantage and the value chai - as well as a set of practical tests to apply in evaluating existing strategies or developing new ones. You'll also learn Porter's thinking about critical issues such as scale, goal setting, sustainability, and disruption