Proceedings of the 2nd International Conference on Cloud Computing and Services Science Acronym: CLOSER 2012 Event held on: April 18-21, 2012, in Porto, Portugal Editors: Frank Leymann 1 , Ivan Ivanov 2 , Marten van Sinderen 3 and Tony Shan 4 Affiliations: 1 University of Stuttgart, Germany , 2 SUNY Empire State College, United States , 3 University of Twente, Netherlands , 4 Keane Inc., United States ISBN: 978-989-8565-05-1