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When Service Oriented applications and services are modeled, the term Quality of Service (QoS) is used to refer to the collection of constraints and quality requirements for a service. It is important that QoS attributes are specified in early stages of the development process, and modeled in a way that can be recognized and understood by all stakeholders. Regarding Service Oriented Architecture (SOA)...
In open systems, independent services exist in administrative domains outside that of the consumers of those services. Current standards exist to create management interfaces to allow operational management of services while keeping the services basic functionality fixed. These standards lack the ability to facilitate the establishment of agreements between services across administrative domains or...
There are numerous existing notations and standards in the Web service community. These may be grouped broadly into three competing families, namely; Web services, semantic Web, and electronic business. Although the families are competing, we expect that applications will cut across them and there is a need to map from one to another and to analyze compatibility and other properties. Therefore we...
In the current globalized world, characterized by strong Web based interactions, relationships between people and organizations are subject to fast changes. This situation justifies the need for an approach that can capture business changes and quickly implement them into computational systems. Considering that some business logic portions are quite volatile and susceptible to changes and other portions...
Current fashion systems to interconnect large software architectures are moving toward SOA based solutions. This new paradigm for designing system can be improved, in our opinion, by using semantics. Semantics can a play a main role in boosting interoperability thanks to current technologies to express knowledge and to describe semantic Web services (SWS). This paper tackles the provision of a Software...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
In this paper we discuss the use cases for monitoring of Web services for compliance with policies and service level agreements. In particular, the quality of service associated with Web service interactions and its monitoring rely on the proper use by both parties of related Web service protocols. This monitoring is best served by an event-centric model and an extensible scripting language, such...
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