This book is a peer-reviewed collection of papers, modified and extended for the purpose of this publication, but originally presented at the International Conference on Evaluation of Novel Approaches to Software Engineering 2008 and 2009 (ENASE 2008 / 2009).The book 's content is placed within the entire framework of software engineering activities, but with particular emphasis on experience reports and evaluations (qualitative and quantitative) of existing approaches as well as new ideas and proposals for improvements.