Dennis M. Ahern, Richard Turner, Aaron Clouse - This book is about a new way of approaching process improvement for engineering development. Process improvement is a generally well-understood and accepted means of achieving quality and productivity gains for software development, and the recognition of its importance for other engineering disciplines is growing. The success and wide adoption of the Capability Maturity Model for Softwareâ has led to increased development of similar models in disciplines other than software. The resulting adoption of multiple models in engineering organizations has led to conflicts in process improvement goals and techniques, considerable increases in required training, and confusion on the part of practitioners as to which of the various models applies to their specific needs.