This book constitutes the thoroughly refereed and revised post-conference documentation of the 11th International Conference on Software Engineering and Knowledge Engineering, SEKE'99, held in Kaiserslautern, Germany in June 1999. The book provides a unique overview of current activities, approaches, and trends in learning software organizations. The first part gives an overview on the topic, covering foundations in the software engineering domain, enabling techniques for organizational learning, and learning support techniques. The second and the third part of the book on methodology and applications present thoroughly revised full papers of the most interesting papers on learning software organizations presented during SEKE'99 and its satellite workshop LSO'99.