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This paper describes various challenges in ensuring Quality Attributes (QA) of applications hosted in the cloud and hence the perceived quality of service of the cloud as a whole. This paper advocates a self-management/optimization architecture driven approach to ensure that Quality Attributes are met. The author discusses the limitations of current approaches to self-managing architecture. This paper proposes a novel approach, which exploits the El Farol problem as a modelling mechanism for QAs in architectures of applications in the cloud. The approach uses Service Level Agreements (SLA) and Utility Theory to direct the self-optimization. The authors conclude by looking at directions for further work.
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