我们要回顾和分析事件进展，确定要改善的地方并祝愿接下来一年发展顺利。从专业角度回顾2011年，不难回答，今年对云计算来说是好年景。

　　让我们来看一看2011年的闪光点：

　　我决定从奠定全年基调的新闻讲起：Gartner公司宣布，2011年云计算是首席信息官的技术重点。这个主题在我第一篇文章“为何云计算是未来必胜的赌注”中有进一步分析。

　　在2011年，云计算模式的商业利益已经得到了很好的阐述。一项来自Cloud.com 的调查显示，硬件保存是使用云存储和平台即服务最普遍的原因。而且，12%的IT专业人士表明，他们会优先考虑在公共云中运行基础设施。如果你想了解更多云计算利益的相关内容，请阅读“在云计算实施中可以存储量是多少?”“云计算：商业模式还是技术模式?”以及“浅谈私有云与公共云及介于两者之间的一切。”

　　来自Cloud.com的同一项研究显示，2011年，首席信息官表示，扩展性(71%)是应用云计算最普遍的理由，其次是灵活性(61%)和调整资源需求波动的需要(61%)。在我的文章“Cisco 数据中心结构的演化与革命”中，我谈到了Cisco是怎样克服这些挑战的。

　　今年，云计算技术使IT业发生的变化只是冰山一角。云计算软件开发正在使平台更加可定制化，IT辅助人员正在减少，新技术和专长需求量增加。2011年一个高峰就是5月推出的Chromebook，它是首台完全在云中运行的计算机。

　　安全方面的担忧是2011年最严峻的挑战，特别是由于缺乏信任，公司已经在企业组织中托管他们的数据。但我相信，我们可以逐渐克服这些障碍，随着IT专业人士获得更多云计算技术的知识，他们会在外包数据领域越来越可信。证据是什么呢?如下：虽然云计算用户最严峻的管理挑战是安全性(36%)，但是大多是IT专业人士更喜欢用虚拟化来部署他们的技术设施。

　　最后，2011年，云计算一个非常重要的好处开始引起注意。在当今提倡保护生态环境的社会，云计算还有绿色凭证。所以，除了了解云计算的财政优势以外，我们还应问问“为何云计算绿色环保?”

　　我希望通过这篇文章，对于2011年云计算市场的发展以及云计算的好处和需要克服的障碍有了清楚的了解。我们还需要加入很多深刻的见解，大家可以随意发表对于过去一年云计算重要性的评论。

　　Here we are, at that time of the year when we look back and analyze how things went, decide what should be improved and hoping for the best in the following year. Looking back to 2011, from a professional perspective, I find it easy to say that this was a good year for cloud computing.

　　Let’s take a look to the highlights of 2011:

　　I decided to begin with the news that, in my opinion, set the tone for the whole year: the Gartner study which proclaimed cloud computing as a Top Technology Priority for CIOs in 2011. This subject it’s further analyzed in one of my first articles: Why is Cloud Computing a Safe Bet for the Future?

　　In 2011 the business benefits of a cloud computing model have been very well stated. A Cloud.com Survey revealed that hardware savings are the most popular reason for using cloud-based storage and using Platform-as-a Service. Also, 12% of IT professionals indicated their preference to run their infrastructure on public clouds. Here are some additional reads if you want to know more about cloud computing benefits: How Much You Can Save On Your Cloud Computing Implementation?, Cloud Computing: Business Model or Technology? and About Private or Shared Cloud and Everything in Between.

　　From the same Cloud.com survey, in 2011 Chief Technical Officers indicated scalability (71%) as the most popular reason for adopting cloud computing, followed by elasticity (61%), or the need to adjust to fluctuations in resource demands (61%). In my article Evolution and Revolution with Cisco Data Centre Fabric. í have talked about how Cisco rose to these challenges.

　　This year, cloud computing technology offered us a sneak peak at the changes it produces for the IT world. Software development in Cloud is making the platforms more customizable, the need for IT support staff is reduced and new skills and specialties are in high demand. One of the highpoints of the year was the Chromebook being released in May 2011, the first computer that operates entirely in the cloud.

　　The fears concerning security issues were the biggest challenge in 2011, especially because of the lack of trust companies have on an organization hosting their data. But I believe, this obstacle will be overcome and little by little, we will see IT professionals becoming more trustful concerning outsourcing data as they gain knowledge about cloud computing technology. The proof? Even if the biggest management challenge for cloud computing users was security (36%), most IT professionals prefer to deploy their infrastructure using virtualization (77%).

　　Last, but not least, in 2011, a very important benefit of cloud computing began to get noticed. In a world that should be more eco-friendly, cloud computing proves great green credentials. So besides asking about financial advantages, we should also ask Why is Cloud Computing Green?

　　I hope this article offers you a broad look on how the cloud computing market developed in 2011 and demonstrates the gains and the obstacles that still need to be overcome. There are many other insights to add, so please feel free to comment on what you thought was important for cloud computing this past year.