云服务_百度百科
http://baike.baidu.com/link?url=DbmHkcoQPTa3jGblGQMaLFvsSgTM9NnarSrdd1SDP3L2Lpf0J6UvosVyXHJCVt1iKVkBdHvv_CyrxY_TpxLgOq
IBM
http://www.ibm.com/cloud-computing/cn/zh/what-is-cloud-computing.html?csr=apch_dsw1_20140114_1389678920936&cm=k&cr=baidu&ct=103D60303S&ck=%E4%BA%91%E6%9C%8D%E5%8A%A1%E6%98%AF%E4%BB%80%E4%B9%88&cmp=103D6&mkwid=1OWoxxmk8_1852570717_432t3t30585
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原文:http://www.cnblogs.com/wc12436109/p/3579502.html