A Service Level Agreement (SLA) is an electronic contract between a service user and a provider, and specifies the service to be provided, Quality of Service (QoS) properties that must be maintained by a provider during service provision (generally defined as a set of Service Level Objectives (SLOs)), and a set of penalty clauses specifying what happens when service providers fail to deliver th...

The Cloud Bank model, which is derived from Grid bank [1], is a kind of commerce model of cloud computing that provides pay-as-you-go computing resources. In this model, Cloud Bank is an agent platform of resource transaction. Cloud computing uses the concept of service level agreement (S LA) to control the use and receipt of computing resources from, and by, Cloud Bank. As computing resources ...

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 ...

Effective and efficient Quality of Service (QoS) management is critical for a service grid to meet the requirements of both grid users and service providers. We introduce Q-GSM, a scalable framework for service management in grid environments, to address this problem. Main characteristics of our framework are 1) grid level resource reservation mechanism; 2) mapping application level service qua...

This paper presents a market-enabling framework where users, content providers and network operators can interact in the seamless, transparent sale and delivery of a wide range of services. The framework allows for dynamic creation, configuration and delivery of services with quality assurance, via automated management of Service Level Agreements (SLAs). We propose an approach relying on a syst...

SLA driven service transaction has been identified as a key challenge to take advantage of a SOA. FAST System provides a software framework for the automated creation of SLAs. In particular it have been developed as an extension to the ESB (Enterprise Service Bus) paradigm to create a transparent SLA management layer that drives any service invocation. Our framework has been successfully applie...

Services based on packet switched networks are becoming dominant in telecommunication business and both operators and service providers must evolve in order to guarantee the required quality. Increasing bandwidth is no longer a viable solution because of the business erosion for network operators which cannot expect revenues due to the large investments required to satisfy new applications dema...

In previous research we introduced the MoDe4SLA approach for monitoring service compositions. MoDe4SLA identifies complex dependencies between Service Level Agreements (SLAs) in a service composition. By explicating these dependencies, causes of SLA violations of a service might be explained by malfunctioning of the services it depends on. MoDe4SLA assists managers in identifying such causes. I...

Service Level Agreements (SLAs) are fundamental technical-juridical documents which in their function as contract govern the rights and obligations between service consumers and providers. In today’s growing service ecosystems, individually negotiated SLAs have powerful additional roles such as serving as the input for automated service monitoring and health checking as well as binding service ...

QoS assurance is a challenging task in unreliable networks. One of the reasons for unreliability in networks is the shortage of network resources under peak load conditions. Providing additional network resources is a possible solution for managing SLAs in unreliable networks. On demand market of bandwidth provides a good source for acquiring the necessary network resources from foreign network...