engineering technologies and research activities, not only in the Asia-Paci?c region but also in the international research arena. April 2008 Hiroyuki Kitagawa Kam Fai Wong Preface The rapid development of Web applications and the ?ux of Web information require new technologies for the design, implementation and management of information infrastructure on the Web. This volume contains papers selected for presentation at the 10th Asia Paci?c Conference on Web Technology (APWeb 2008), which was held in Shenyang, China during April 26-28, 2008. APWeb is an international conference series on WWW technologies and is the primary forum for researchers, practitioners, developers and users from both academia and industry to exchange cutting-edge ideas, results, experience, techniques and tools on WWW-related technologies and new advanced applications. APWeb 2008 received 169 submissions from 19 countries and regions wor- wide, including USA, Australia, Japan, Korea, China, Hong Kong, Taiwan, UK, Germany, India, France, Turkey,Pakistan,Switzerland, New Zealand, Iran, Macao, Malaysia, and Tunisia. After a thorough review process in which each paper was reviewed and recommended by at least three Program Committe (PC) members or external reviewers, the APWeb 2008 PC selected 48 regular research papers (acceptance ratio 28%) and 15 short papers (acceptance ratio 9%). This volume also includes four invited/keynote papers. The keynote l- tures were given by Masaru Kitsuregawa (University of Tokyo), Wei-Ying Ma (Microsoft Research Asia), Xuemin Lin (University of New South Wales) and Yong Shi (China Academy of Sciences).