The 15th International Conference on Information Integration and Web-based Applications & Services (iiWAS2013) is a leading international conference for researchers and industry practitioners to share their new ideas, original research results and practical development experiences from all information integration and web-based applications & services related areas. iiWAS2013 is endorsed by the International Organization for Information Integration and Web-based Applications & Services (@WAS), and will be held from 2-4 December 2013, in Vienna, Austria in conjunction with the 11th International Conference on Advances in Mobile Computing & Multimedia (MoMM2013).