I. Introduction and Motivations
SERVICE orientation has played an extremely important role in the evolution of Information Technology in the last decade. It provides the foundations for some of today's most significant advancements, such as Web 2.0, Cloud computing, and the Internet of Things. The service abstraction imposes that we rethink methods and techniques for developing and managing both physical (i.e. hardware infrastructure) and logical systems (i.e. software architecture). In the former case, we speak of Service Oriented Infrastructure, while in the latter we speak of Service Oriented Architecture.