This book constitutes the proceedings of the First International ICST Conference, DigiBiz 2009, held in London, UK, in June 2009.

The 19 contributions published in this volume were carefully selected from over 60 submitted works in a rigorous peer-reviewed process.

The papers dealt with subjects like virtual business alliances, organizational and coordination theory, model driven businesses, efficient energy management, e-negotiations, future internet markets and business strategies, agent technologies, recommender for active preference estimate, trust & reputation models for e-commerce, RFID architectures, decentralized system for ubiquitous VoIP services, reservation and incentive schemes for Grid markets, end-user driven service creation, digital media distribution, IP-TV, social media trails, P2P business and legal models.