It consists of I3E2004 proceedings, Fourth International Conference on E-Commerce, E-Business, and E-Government, held in August 2004 as a conference co-located from 18th IFIP World Computer Congress in Toulouse, France, and sponsored by the International Federation for Information Processing (IFIP). This book contains the latest results and developments in the following areas: E-Government: E-Government Model and Process E-Governance Service Provisioning E-Business: Infrastructure and markets M-Commerce Purchases and Payments E-Commerce: Value Chain Management E-Business Architecture and Processes E-Business Models