Only in recent years, service-oriented architectures (SOA) and Web services not only gained an interest in computer science research, they are also taken unanimously by all major international players in the IT industry. Semantic Web services combine Web services communication technology with intelligent processing of ontology-based metadata to achieve enterprise application integration scenarios are highly integrated, for look-up service, a suitable scheme, or protocol negotiation, for example. They address computer science students and researchers in academia and industry who need a concise introduction and state-the-art survey of current research, and the book can easily be used as the basis of specialized courses on Web services or Semantic Web applications.