Autonomic SLA-Aware Service Virtualization for Distributed Systems

Cloud Computing builds on the latest achievements of diverse research areas, such as grid computing, service-oriented computing, business processes and virtualization. Managing such heterogeneous environments requires sophisticated interoperation of adaptive coordinating components. In this paper, the authors introduce an SLA-aware service virtualization 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. They demonstrate the advantages of the proposed solution with a biochemical case study in a Cloud simulation environment.