基础结构服务主要通过按需分配计算能力来解决正确配备数据中心这一问题。
Infrastructure services address the problem of properly equipping data centers by assuring computing power when needed.
对于平台服务，虚拟化是提供按需分配资源的常用方法。
As with platform services, virtualization is an often used method to provide the on-demand rationing of the resources.
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