As the technology of cloud computing has been developed, the various architectures are proposed. Cloud Federation, which is the practice of interconnecting the cloud computing environments of two or more service providers, is well-known, for example. In order to use cloud resources more efficiently, the suitable cloud should be chosen by importance, availability or priority of purpose for each work. The method of selecting the suitable cloud storage service automatically by the evaluation

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... of documents and cloud services was proposed. In that method, evaluation of the cloud storage services was calculated based on SLA: Service Level Agreement. However, reading SLA is demanded yet to decide which cloud services is the suitable when users use them. In this paper, the method of XMLizing SLA is proposed and each clause of SLA can be used as XML parameter and processed automatically by XSLT.