Description

Networking plays a crucial role in Cloud computing. Users access Cloud services through computer networks. Services received by end users consist of not only computing functions provided by Cloud infrastructure but also communication functions offered by the Internet. Recent research has indicated that networking performance has a significant impact on the quality of Cloud services provided to end users. The important role of networking in Cloud computing calls for federated management of both computing and networking resources for service provisioning in a Cloud environment. Recently the Service-Oriented Architecture (SOA) has also been applied in networking in order to address the challenge of rapidly developing and deploying new network functions. To realize the notion of converged network–Cloud service provisioning, one of the key challenges lies in the QoS-aware service composition across the networking and computing domains; that is, composing an appropriate sequence of network and Cloud services to meet end-to-end service performance requirements while optimizing networking and computing resource utilization. In service oriented scenarios, applications are created by composing atomic services and exposing the resulting added value logic as a service. When several alternative service providers are available for composition, quality of service (QoS) properties such as execution time, cost, or availability are taken into account to make the choice, leading to the creation of QoS-aware composite web services. Finding the set of service providers that result in the best QoS is a NP-hard optimization problem. In this project, the system proposed a network-aware approach. It can handle the QoS of services and the QoS of the network independently.