Book excerpt: In The Chasm Companion, The Chasm Group's Paul Wiefels presents readers with a new analysis of the ideas introduced in bestselling author Geoffrey Moore's classic books, Crossing the Chasm and Inside the Tornado, and focuses on how to translate these ideas into actionable strategy and implementation programs. This step-by-step fieldbook is organized around three major concepts: how high-tech markets develop, creating market development strategy, and executing go-to-market programs based on the strategy.