This paper describes an application of the TrustCoM environment to support secure contract based collaboration between companies using managed web services. The application scenario describes a consortium of engineering companies that seek to upgrade a customer’s fleet of aircraft to provide in-flight internet capabilities. The environment supports the consortium to collaborate so as to take ad...

Web and Grid Services are quickly maturing as a technology that allows for the integration of applications belonging to different administrative domains, enabling much faster and efficient business-to-business arrangements. For such an integration to be effective, the Provider and the consumer of a service must negotiate a Service Level Agreement (SLA), i.e. a contract that specifies what one p...

The Semantic Grid aims at enhancing Grid architectures by knowledge engineering techniques. The service notion is central in this approach. Service-level agreements, called contracts, are formed to define the service usage conditions. Ontology technology can form the framework to capture semantical conditions for contracts. Often, applications of Grid services involve a combination of several s...

Service-Oriented Architectures (SOA) represent an architectural shift for building business applications based on loosely-coupled services. In a multi-layered SOA environment the exact conditions under which services are to be delivered can be formally specified by Service Level Agreements (SLAs). However, typical SLAs are just specified at the customer-level and do not allow service providers ...

Future e-business models will rely on electronic contracts which are agreed dynamically and adaptively by web services. Thus, the automatic negotiation of Service Level Agreements (SLAs) between consumers and providers is key for enabling service-based value chains. The process of finding appropriate providers for web services seems to be simple. Consumers contact several providers and take the...

Federation of Cloud services is notably landing interests from both Cloud providers and consumers. Cloud providers nowadays are required to form federations to remain competitive, and sustain their market share. Cloud consumers however seek optimized services from Clouds federation. They strive to maximize their satisfaction level, which is often measured by Quality of Service (QoS). Federation...

Dans ce travail, nous montrons comment mettre en œuvre la gestion des ressources et la garantie de QoS (Quality of Service) dans l’interdomaine en utilisant le modèle en stock [1]. Dans [1], nous avons appliqué un modèle distribué pour l’établissement des SLAs (Service Level Agreement) entre les opérateurs pour l’achat des routes avec une garantie de QoS et des résultats significatifs ont été o...

We develop and evaluate an approach for generating Personalized Service Level Agreements (PSLAs) that separate cloud users from the details of compute resources behind a cloud database management service. PSLAs retain the possibility to trade-off performance for cost and do so in a manner specific to the user’s database.

In this paper we describe a framework for providing customers of Web services differentiated levels of service through the use of automated management and service level agreements (SLAs). The framework comprises the Web Service Level Agreement (WSLA) language, designed to specify SLAs in a flexible and individualized way, a system to provision resources based on service level objectives, a work...

We present a generic Service Level Agreement (SLA)-driven service provisioning architecture, which enables dynamic and flexible bandwidth reservation schemes on a per-user or a per-application basis. Various session level SLA negotiation schemes involving bandwidth allocation, service start time and service duration parameters are introduced and analysed. The results show that these negotiation...