This book is a result of the European Experience Exchange (EUREX) project sponsored by the European Systems and Software Initiative for Software Best Practice in Europe. The EUREX project analyzed the industrial and economic impact and the similarities and differences between and among more than 300 Software Process Improvement Experiments sponsored by the EU.The current volume offers a variety of perspectives on software configuration/change management and requirements engineering. These areas have a significant impact on the success of a software product and present a high potential for improvement as many organisations, especially small and medium-sized enterprises, have no purposeful process addressing these issues. As a result, this book is particularly meaningful for software practitioners in such enterprises, including both developers and line managers.