Private clouds will serve as a stepping stone to public clouds.

私有云将成为公共云的垫脚石。

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The biggest hindrance to deploying these types of PaaS offerings on public clouds is trust.

在公有云上部署这样的PaaS产品的最大障碍就是信任关系。

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Virtual machines will indeed increasingly move about, but mostly within private and public clouds or trusted federations of them.

虚拟机移动的趋势确实会增长，但是大多仅限于私人和公共云或者是具有可信度的联邦之间移动。

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In fact, RightScale makes it possible to manage multiple public clouds as well as private ones.

FORBES: RightScale: Believing in the Cloud When It Wasn't Cool

Most of the applications deployed on public clouds can be classed as embarrassingly parallel, i.e.

FORBES: Moore's Law: Why It Matters Now More Than Ever

That means offloading some scut work to public clouds, while retaining internal policies around data quality.

FORBES: IBM's Cloud Expansion