The Growth Handbook` is a new book launched by Intercom, featuring insights from industry leaders who have grown businesses from $0 to many billions in revenue. The book focuses on six critical pieces of the growth puzzle: acquisition, activation, retention, monetization, testing and optimization, and metrics and measurement. It provides actionable advice on topics such as pinpointing product magic moments, driving word of mouth, and measuring growth experiment success. The book aims to help businesses find sustainable answers to their growth challenges, with the goal of empowering them to grow with more confidence and certainty.