•    On demand availability
Cloud Computing – Challenges
•    Security
•    Performance
•    Uninterrupted availability
•    Integration with in-house IT
•    Ability to customize to internal needs
•    Migrating back to in-house
•    Regulatory requirements prohibit cloud (data storage abstracted)
Cloud Computing Security – Advantages
•    Shifting public data to a external cloud reduces the exposure of the internal sensitive data
•    Cloud homogeneity makes security auditing/testing simpler
•    Clouds enable automated security management
•    Redundancy / Disaster Recovery
Cloud Computing Security – Challenges
•    Trusting vendor’s security model
•    Customer inability to respond to audit findings
•    Obtaining support for investigations
•    Indirect administrator accountability
•    Proprietary implementations can’t be examined
•    Loss of physical control
•    Denial of Service
原文的翻译
什么是云计算？
一段时间后，我创建了一个介绍云计算会话的演示文稿（PPT）。这个PPT幻灯片将有助于了解“什么是云计算？”。我想与大家分享的PPT。
云计算起源论文网
“从我们提请网络作为云互联网的初期来... ...我们不关心这些消息哪里去了......云计算把它藏起来了”
- 凯文 - 马克斯，谷歌
“新兴的云抽象了基础设施的服务器，应用程序，数据和异构平台的复杂性”
- 杰夫•贝索斯，CEO，亚马逊。 云计算英文文献和中文翻译(2):http://www.751com.cn/fanyi/lunwen_38621.html