This book constitutes the thoroughly refereed post-proceedings of the Second International Workshop on Web Services, E-Business, and the Semantic Web, WES 2003, held in June 2003 in conjunction with CAiSE 2003.The 10 revised full papers presented together with 2 invited contributions were carefully selected and improved during two rounds of reviewing and revision. The papers address the following topics: enterprise application integration, ontologies and the semantic Web, meta-workflows, workflow systems, e-services, semantic Web queries, e-markets, electronic service contracts, context modeling for Web information systems, Web service middleware, Web service offerings language, WSOL, Web service description, Web service composition, and Web service coordination.