We introduce a self-control integrated service component aiming at ensuring Service Level Agreement management. Our approach based on quality of service has two important points: the contract description (supply and demand) and the contract management. The self-control in service components allows us to react dynamically (operational decision) and the autonomic loop enables us to manage the ser...

This paper proposes efficient resource allocation techniques for a policy-based wireless/wireline interworking architecture, where quality of service (QoS) provisioning and resource allocation is driven by the service level agreement (SLA). For end-to-end IP QoS delivery, each wireless access domain can independently choose its internal resource management policies to guarantee the customer acc...

Please cite this article in press as: Q. He Inform. Sci. (2009), doi:10.1016/j.ins.200 In the web services environment, service level agreements (SLA) refers to mutually agreed understandings and expectations between service consumers and providers on the service provision. Although management of SLA is critical to wide adoption of web services technologies in the real world, support for it is ...

In order to reduce costs, many enterprises have started to focus on their core business processes. As a consequence non-central business processes more and more are outsourced to external service providers. The relelationships between service providers and the service consumers are laid down in legal contracts called Service Level Agreements (SLAs). It is the task of the Service Level Managemen...

The scientific applications of the fourth paradigm [1] of science deal with large amounts of data, which can be stored in various storage devices or systems taking into account the possibility of sharing and archiving. Some of the requirements posed to those storage systems may concern the Quality of Service (QoS) aspects. Examples of such requirements are: specifying the minimal data transfer ...

Service-level agreements (SLA) definition and monitoring are open issues within the IT Service Management (ITSM) domain. Our main goals are to propose a model-based approach to IT services SLA specification and compliance verification. The specification will be accomplished by proposing a SLA language a domain specific language for defining quality attributes as non functional requirements (NFR...

This research addresses a critical issue of service level agreement (SLA) violation handling, i.e., time constraint violation related to service-based systems (SBS). Whenever an SLA violation occurs to a service, it can potentially impact dependent services, leading to unreliable SBS. Therefore, an SLA violation handling support is much required to produce a robust and adaptive SBS. There are s...

Cloud computing that provides cheap and pay-as-you-go computing resources is rapidly gaining momentum as an alternative to traditional IT Infrastructure. As more and more consumers delegate their tasks to cloud providers, Service Level Agreements(SLA) between consumers and providers emerge as a key aspect. Due to the dynamic nature of the cloud, continuous monitoring on Quality of Service (QoS)...

Current network infrastructures are experiencing rapid transformation from providing mere connectivity, to a wider range of flexible network services with Quality of Service (QoS). We propose an agentenhanced system that facilitates dynamic Service Level Agreement (SLA) activities, such as end-to-end QoS specifications and service price negotiations in such an environment. A prototype system co...

—Availability, as a part of Service Level Agreement (SLA), is a critically important issue in cloud services, which are affected by server or network failures in datacenters. Cloud service providers seek to not only fulfill the SLA, but also simultaneously minimize their operating costs, which are dominated by the energy consumption. In order to minimize the impact of a server/switch failure o...