The text covers the service creation and network technology alternatives to support these services and discusses active and programmable networks in detail. This gives insight into the practical approach followed in the CONTEXT project, supplying concrete guidelines for building context-aware service success. Fast and efficient Context-Aware Services: * Provides comprehensive and in-depth information on CAS technology state-of-the-art. * Propose a CAS system architecture for manufacture and delivery, discussing service management and active network layer. * Describes the service lifecycle functional architecture, covering service authoring, customization, prayer, and security. * Explains system design considerations and details, system evaluation criteria, test-bed requirements, and outcome evaluation. Fast and efficient Context-Aware Services is an invaluable resource for telecommunications developers, researchers in academia and industry, advanced students in Computer Science and Electrical Engineering, telecom operators, as well as personnel management and telecommunications operators.