The 8th International Conference on Software Composition, SC 2009, was held in Zu ]rich, Switzerland, during July 2-3, 2009. Over the years SC has become an important and inspiring forum for researchers, practitioners, and students working in the broad ?eld of software composition. This topic area was further exploredbybothhigh-qualitypaperpresentationsaswellastwoexcellentinvited speakers. In all, 34 submissions underwent a full review process by the Program C- mittee (PC). Only 10 were accepted for publication and presentation at the conference. The published papers were selected according...