**Are you prepared for the coming AI era?** AI advances will profoundly change your daily service interactions, so this book provides readers with *a necessary understanding of service, the application of resources (e.g., knowledge) for the benefit of another.* In just minutes, you can learn about today’s use of early-stage AI for automation and augmentation, and essential elements of **service science, service-dominant (S-D) logic, and Service Dominant Architecture (SDA).** **Ultimately improved service *for all* is possible with human-level AI and digital twins – but requires investing wisely in better models:** Better models of the world both complex natural and social systems (science), better mental-models in people to improve interactions (logic), better cultural and structural models of organizations to improve change (architecture), and better trusted and responsible AI models. *The service innovation community studies and builds better models to improve interactions and change in business and society.* The book challenges all responsible actors – individuals, businesses, universities, and governments – to **invest systematically and wisely to upskill with AI (the X+AI vision)**. The service innovation community is a growing transdiscipline harnessing all disciplines to become better T-shaped professionals. Extensive end notes, bibliography, and index are provided.