The authors of this paper introduce a new minimal metric monitoring service (M3S) to evaluate cloud provider services, in support of optimal use of federated cloud resources. All of the other components comprising the federated cloud management (FCM) infrastructure, including the generic meta-broker service, SALMon service monitoring, and cloud-broker, appear to be previously published works by these authors. There is some mention of extensions to this work, but since these are not described, I assume they are so minor as to not merit discussion. Therefore, the heart of what is new is M3S and what it measures, and the value of using its results.
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