Autonomic SLA-aware Service Virtualization for Distributed Systems

Abstract—Cloud Computing builds on the latest achieve-ments of diverse research areas, such as Grid Computing, Service-oriented computing, business processes and virtual-ization. Managing such heterogeneous environments requires sophisticated interoperation of adaptive coordinating compo-nents. In this paper we introduce an SLA-aware Service Virtu-alization architecture that provides non-functional guarantees in the form of Service Level Agreements and consists of a three-layered infrastructure including agreement negotiation, service brokering and on demand deployment. In order to avoid costly SLA violations, flexible and adaptive SLA attainment strategies are used with a failure propagation approach. We demonstrate the advantages of our proposed solution with a biochemical case study in a Cloud simulation environment. Keywords-Cloud Computing; SLA-negotiation; Service Bro-kering; On-demand deployment