Book excerpt: eBusiness is growing rapidly and new issues are emerging in this global and real-time activity. This new edition to the hugely successful eBusiness Essentials explores the increasingly important area of mobile data access. In addition, it shows how eBusiness is evolving and how technology can be progressively used to build more sophisticated solutions. Balancing its technical depth with a clear and practical analysis of market models it enables the reader to deploy the available and emerging technology effectively and appropriately. In addition to the established yet equally important features such as security, payment and trust, supply chain integration and customer to supplier trade it includes: * mBusiness covering key issues such as roving and roaming access and the technologies GPRS, UMTS and WAP * Help for the reader to formulate their own eBusiness strategy by drawing out some general principles * Virtual mobile network operators: data extensions to the mobile switch, home and visitor location * Analysis and real world examples of mobile services * The technical options,impact, integration, mechanics and implications of evolving eBusiness Primarily aimed at planners, engineers, managers and developers in the IT, multimedia and on-line industries. Recommended reading for students in computer science, electrical and electronic engineering, IT and telecommunications.