Many enterprise software systems supporting IT services are characterised by a need for a high computing capability and resource consumption (Armbrust et al. 2010; Buyya et al. 2008; Ko\c{c}ak et al. 2013). Cloud Computing initiatives have received a significant attention as a viable solution to address these requirements through offering a wide range of services, which are universally accessible, acquirable and releasable in a dynamic fashion, and payable on the basis of service usage. Hence, organisations view the cloud services as an opportunity to empower their legacy systems.
翻译：许多支持信息技术服务的企业软件系统的特点是需要高的计算能力和资源消耗(Armbrust等人,2010年;Buyya等人,2008年;Ko\c{c}ak等人,2013年)。云计算举措作为解决这些需求的可行解决办法,得到了高度重视,它提供了广泛的服务,这些服务可以普遍获得、可获取和动态地传播,并且根据服务使用情况支付费用。因此,各组织认为云服务是增强遗留系统能力的一个机会。
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