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...

As the technology of internet and multimedia processing is improving, IPTV has emerged as new revenue opportunities to network service providers. Network service providers have to consider both network and multimedia processing factors to guarantee adaptable network service level of IPTV service. In the view of network service customers, it is a good way to require network service providers to ...

The telecom market is evolving towards services. The arrival of next generation networks with a new generation of service and market deregulation have led to the emergence of many new service providers for whom Service Level Agreement (SLA) management is a key differentiator. Service provider differentiation will depend largely on the reliability of their SLA management and monitoring, and the ...

This paper proposes to integrate security parameters into the Service Level Specification (SLS) template proposed in the Tequila project to improve SLA-based management of QoS [8, 21]. Integrating those parameters in the QoS part of the Service Level Agreement (SLA) specification is essential in particular for secure multimedia services since the QoS is negotiated when the multimedia service is...

In today’s enterprise service oriented software architectures, database systems are a crucial component for the quality of service (QoS) management between customers and service providers. The database workload consists of requests stemming from many different service classes, each of which has a dedicated service level agreement (SLA). We present an adaptive QoS management that is based on an ...

The negotiation on Service Level Agreement (SLA) in current complex cloud environment often involves the multilateral negotiation. Therefore, this paper presents an SLA-oriented multiparty trust negotiation model based on Hierarchical Colored Petri Net (HCPN) in cloud environment. This model mainly provides trust negotiation of SLA parameters such as credibility, reliability, availability and s...

Web service behaviour is currently specified in a mixture of ways, often using methods that are only partially complete. These range from static functional specifications, based on interfaces in WSDL and preconditions in RIF, to business process simulations using executable state-based models such as BPEL, to detailed quality of service (QoS) agreements laid down in a service level agreement (S...

Service orientated architectures (SOA will support a dynamic market in commodity services and enable business to drive down costs and respond faster and flexibly to changing markets. Virtualisation delivers similar benefits for the management of resources. If viable business models for the combination of these two technologies can be found, a true commodity grid can become reality. An essential...

A Service Level Agreement (SLA) is a business operations concept that is sometimes inappropriately applied to engineering development. When an SLA is not converted to engineering requirements, development occurs blindly, and testing is probably done against some of the values specified in the SLA. The result is higher risk and higher cost. This paper illustrates some fundamental aspects of the ...

As the contents of multimedia proliferate, the higher level of network speed is needed to the customer. SLA is a negotiated agreement between a customer and the service provider on levels of service characteristics and the associated set of metrics. In this paper, we propose an SLA management system reacting not only when an SLA is violated, but also before imminent SLA violations. We provides ...