This book constitutes the refereed proceedings of the 7th International Conference on Web Engineering, ICWE 2007, held in Como, Italy in July 2007.

The 26 revised full papers and 13 revised short papers presented together with 9 demonstration papers, 4 industrial papers, and 4 papers of the doctoral symposium, were carefully reviewed and selected from 172 submissions. The papers are organized in topical sections on services, metrics and quality, caching, interfaces, models, verification and testing, semantics and Web 2.0, search, application development, demonstrations, the industrial track, and the doctoral consortium.