This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book aims to provide a quick overview of why sustainability requires innovation. It then looks at a summary of innovation theory and thinking before pulling together the hitherto largely separate disciplines. The book discusses sustainable innovation and includes relevant case studies and provides practical advice on taking these issues forward. The purpose of the book is to provide a practical guide to leading sustainable innovation. There is an extensive literature on both sustainability and innovation but little about innovation for sustainability. The book is a practical guide rather than an academic treatise. There are no exact formulas as each organisation has a different culture and each sector its own challenges and opportunities. The book will be of interest outside the sustainability function, particularly those involved in strategy, product development and human resources.