Dynamic Trust Establishment and Amended Window Based Monitoring in Cloud

Cloud computing is becoming one of the next industry buzz words. In the current cloud computing scenario, the need for establishing an SLA is highly essential, since it expresses the commitment of provider to create an affordable balance between hosting costs and high levels of service availability during the service offerings. It is also highly necessary to monitor dynamically whether the QoS mentioned in the SLA, is met by the service provider. Moreover, a reliable trust model is required to give a quantitative measure of the trust to the requester before choosing a service provider. In this paper, we portray a dynamic trust establishment framework, wherein the Third-party SLA monitor provides an on-demand QoS assessment module, on a real time basis. Based on the computed trust value, the service provider is chosen. Then, the concept of Adaptive window-based state monitoring is introduced, negating the drawbacks associated with the existing techniques, by reducing the amount of data sent over the network. The proposed approach is implemented and it proves to be efficacious than the existing techniques in most cases.