Service management derives from Intelligent Network (IN) technologies used in fixed telephony systems, and has evolved towards supporting packet-based services in an increasingly open environment. It is common belief that 3G (and later 4G) services will change the way we communicate and interrelate. The user will be put at centre stage, systems being able to handle intelligent user profiles, proactive service selection, context-aware service provisioning and ubiquitous computing. As the systems grow more complex and diverse, so do the challenges of managing them. 'Managing mobile services' - Covers challenges, solutions and technologies for implementing IP-based services in a mobile environment, with special attention to security, flexibility and charging; Discusses business models, service management architectures and standardization efforts; Considers requirements and characteristics of services, and service modelling; Includes two case studies illustrating the challenges, technologies and solutions involved with real-world service management.