Cloud computing and virtualization technology have become the trend of data center construction cur-rently. Being a service type of cloud computing, IaaS has been widely used in more and more large enterprises. With IaaS, the applicant can get the IT foundation service quickly and flexibly. This paper first introduces the basic concept of IaaS, and then discusses its overall structure. Finally, this paper analyses in detail the obvious advantages that IaaS brings to enterprise data center comparing with the traditional mode.%云计算和虚拟化技术已经成为当前企业数据中心建设的趋势,IaaS作为云计算的一种服务类型,已经在很多大型企业得到了成功应用,资源申请者可以通过其快速、灵活地获得IT基础设施服务。本文首先对IaaS及虚拟化概念进行介绍,然后讨论基于IaaS的云平台的架构设计,最后分析该平台在实际应用中相比于传统数据中心建设模式带来的明显优势。
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