The rise of Software as a Service (SaaS) composition platforms and so called Compute Clouds demonstrates the growing demand for the agile composition of Web Services. In order to facilitate the composition of services and value-creation, service providers need to collaborate. This collaboration...

This paper presents a framework for Service Level Management indynamic, heterogeneous environments for service composition. Compositions areselected based upon previously observed performance and the associated riskderived from such observations. The architecture of a framework is introduced...

The current trend towards dynamic and highly scalableservice provisioning fosters the rise of Software as a Service(SaaS) platforms and so called Compute Clouds. Theon-demand provisioning of services gains more and moreinfluence. For offering enriched services that are capableof performing...

Today's shift from a product- to a service-oriented economy entails fundamental technical, organizational and economic challenges. The value generated by a service is mainly represented by intangible elements exposed at execution (Hill, 1977). Hence, service consumers expect a service to...

Lately, a new computing paradigm has emerged: “Cloud Computing”. It seems to be promoted as heavily as the “Grid” was a few years ago, causing broad discussions on the differences between Grid and Cloud Computing. The first contribution of this paper is thus a detailed discussion about...