Book excerpt: Rapid Development Handbook paves the footpath for companies facing challenges with their capability to response to urgent product development needs. This book brings together practices and tools researched in Product Management research group at the University of Oulu, many of which have already been presented in scientific publications. As such, this book aims to clarify practices and operational models used in small-scale incremental product development projects. Main challenges addressed are lost business opportunities due to delayed product development activities, inefficient use of product development resources and confusion and delays in ongoing product development projects.