"This book collects a complete set of studies addressing the security and dependability challenges of Web services and the development of protocols to meet them. Encompassing a complete range of topics including specifications for message level security, transactions, and identity management, it...

The current financial crisis forces companies to allocate IT budgets more effectively and thusincreases the demand for suitable methods to evaluate the financial impact of IT investments. Thisespecially applies to service-orientation, a design paradigm which facilitates the standardisationand...

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 cloud computing paradigm gives rise to Web service marketplaces where complex services areprovided by several modular vendors. Recently more and more intermediaries are pushing onto themarket, thereby driving competition. Offering innovative business models which are capable ofattracting...

The fundamental paradigm shift from a product- to a service-oriented economy implies novel technical and organizational challenges. The value generated by a service is mainly represented by intangible elements exposed at execution (Hill 1977). Therefore, a service consumer expects a service to...

This paperoperationalizes correctness for Web service compositions. It also proposes a requirementsframework for service-oriented modeling techniques so that correctness can beshown by verification and Web service compositions can be modeled intuitively.

In practice the ability to find the right Web service decides between a functionality being implemented anew and at least the possibility of executing it via a service. This report evaluates existing public portals for Web service discovery with respect to their characteristics and their...

Im Beitrag wird beschrieben, wie bei der Entwicklung von Services für eine ServiceorientierteArchitektur (SOA) vorgegangen werden kann. Im Vordergrund steht dabei – imGegensatz zu den meisten bisher vorliegenden Veröffentlichungen zum Thema SOA – diefachliche Gestaltung und nicht die...

This deliverable describes the work done in task 3.1 “Implementation of additionalservices for economic enhanced platforms in Grid/P2P platform: Preparation ofconcepts and mechanisms for implementation” from the WP 3, “Proof-of-ConceptApplications”. The document is divided in five parts:...

Der vorliegende Arbeitsbericht hat sich mit der Abrechnung von Web Services sowie miteiner Untersuchung der Eignung von Preisdifferenzierungsstrategien beschäftigt. Dazuwurden ausgehend von einer kurzen Problembeschreibung mögliche Organisationsformenfür die Abrechnung bei der Erstellung...