Applied and Scalable Optimization of Long-term and Network-aware Service Compositions

摘要

Computing optimal service compositions in terms of their non-functional, Quality of Service (QoS), properties, is one of the key problems in realizing the vision of Service-Oriented Computing (SOC), and is known as the NP-hard QSC problem. The spread of Service-Orientation and the rapid increase in the number of available services have spurred various research investigations over the last 10 years. Once software components are defined as services, they can be easily combined to achieve more complex functionality, even by less technical users. Services provide loosely coupled access over the network through clearly defined APIs. This enables robust coupling of software components across both network and company borders. It also makes the SOC paradigm a natural fit for the recent trend of moving an increasing number of software components into the cloud.