Among the control challenges are insufficient security audit possibilities, and the fact that certification schemes and security metrics aren't adopted to cloud computing.

控制方面的课题有：安全审计不足的可能，以及认证方式和安全度量在云计算中没有得到采用这样一个事实。

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These freedoms give you control over your own computing, and make it possible to be part of a community where people help each other.

这些自由使你得以享受自主的计算机体验, 并且使你有可能成为一个互助社区的一份子.

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The first challenge is to create a system that you can control well enough to perform your computing, and another is to fashion a device that will report the results without damaging the system.

第一个挑战是建立一个稳定可靠的系统去执行计算，另一个是建造一个不会造成系统崩溃的结果报告装置。

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The tradeoff when leveraging cloud computing is control, and you have to dial-in the risk of losing access to your PaaS provider.

FORBES: ROI of the Cloud, Part 1: PaaS

In the work of NCBI Staff Scientist and genomics expert Martin Shumway, distilling these large volumes of raw sequencing data requires more sophisticated computing algorithms, intensive quality control and indexing for online searchability by the science community.

FORBES: Bringing the Human Genome Into the Doctor's Office

If Amazon does participate, says Forrester research analyst James Staten, the company will likely use its heft in the cloud computing industry to assert control over the standard and shape it to Amazon's current services.

FORBES: Bridging The Clouds