Service-Oriented Computing and System Integration: Software, IoT, Big Data, and AI as Services focuses on service-oriented computing, web application development, and service-oriented system integration. It covers WSDL services, RESTful services, their development and applications, XML and related technologies, Web data management and database accesses, architecture-driven approach, workflow-based software integration, device and IoT integration, as well as the latest technologies in big data processing, cloud computing, machine-learning, artificial intelligence, and cross-platform mobile/phone application development. The book teaches both principles and hands-on programming skills, leading to operational software development. Exercises, practice questions, and projects are provided at the end of each chapter to help students review and apply what they have learned.