This document provides an introduction to a e-book about transforming marketing organizations to be more data-driven. It discusses how data has become king in marketing over content. The e-book contains advice from 8 experts on how to make a marketing organization more data-driven. It begins with determining a data strategy and understanding customer personas. Other pieces of advice include creating a long-term roadmap, understanding attribution, and continuously improving through data. The goal of the e-book is to provide diverse advice and insights from marketing experts on transforming to a data-driven approach.