????2011年,，云計(jì)算技術(shù)證明,，自己是推動(dòng)IT行業(yè)變革的主要推動(dòng)力。不同類型和規(guī)模的機(jī)構(gòu)均開始正式采用混合云技術(shù),，也就是公共云與私有云計(jì)算綜合服務(wù)。2012我們將迎來(lái)什么,？

私有云不僅不會(huì)消失,，還會(huì)繼續(xù)發(fā)展壯大。

????最初的許多云計(jì)算項(xiàng)目都是源于開發(fā)人員對(duì)緩慢的IT配置能力的不滿,。于是,，他們抓住機(jī)會(huì)，從公共云服務(wù)提供商處獲得原始計(jì)算能力,，而代價(jià)只不過(guò)是一張公司信用卡而已,。于是，有權(quán)威人士稱,，IT的功能已經(jīng)成為歷史,，公共云才是“唯一法門”。而私有云是機(jī)構(gòu)內(nèi)部專用的按需IT基礎(chǔ)設(shè)施,，因此可以說(shuō)它并不是“真正的云技術(shù)”,。而且公共云服務(wù)提供商認(rèn)為,，私有云沒(méi)有存在的必要，因?yàn)樗粔蜢`活,，而且造價(jià)昂貴,。但我認(rèn)為這種說(shuō)法純屬“自以為是”。

????這種說(shuō)法存在兩個(gè)問(wèn)題,。首先是內(nèi)在的自相矛盾：公司目前正在使用私有云提供靈活,、按需提供的計(jì)算環(huán)境，因此不能苛責(zé)IT部門不夠靈活,。另外一個(gè)問(wèn)題是,，機(jī)構(gòu)之所以認(rèn)為在現(xiàn)有數(shù)據(jù)中心中配置私有云更加容易、便宜存在大量現(xiàn)實(shí)的商業(yè)原因,。其中一個(gè)例子實(shí)私有云具備成熟的,、獲得監(jiān)管部門批準(zhǔn)的安全防護(hù)與數(shù)據(jù)隱私控制操作和流程。

????理論上,，在哪里進(jìn)行計(jì)算并不重要,，但實(shí)際上卻并非如此。筆者曾經(jīng)參加過(guò)一次圓桌會(huì)議,，會(huì)上華爾街的一位CIO曾這樣說(shuō)：“當(dāng)然得考慮風(fēng)險(xiǎn)問(wèn)題,。如果可以在私有云上運(yùn)行應(yīng)用程序，審查也不存在問(wèn)題,，為什么要使用外部云服務(wù),？”

混合云將繼續(xù)壯大

????公共云的使用推動(dòng)了計(jì)算技術(shù)的革新，尤其是對(duì)于一些難以預(yù)測(cè)的面向客戶的應(yīng)用程序,。而私有云在公司處理監(jiān)管機(jī)構(gòu),、標(biāo)準(zhǔn)和其他對(duì)運(yùn)行企業(yè)應(yīng)用程序至關(guān)重要的非技術(shù)問(wèn)題時(shí)非常關(guān)鍵。對(duì)云技術(shù)的選擇主要取決于公司和應(yīng)用程序的需求,，因此,，未來(lái)合理綜合公共云與私有云的混合云，仍將是大多數(shù)公司的實(shí)用選擇,。

????In 2011, cloud computing demonstrated that it was a major driver of change in the IT industry. Organizations of all types and sizes began using the hybrid cloud -- a combination of public and private cloud computing -- in earnest. What can we look forward to in 2012?

The private cloud won't go away, but grow bigger.

????Many early cloud projects were the result of developers frustrated by slow IT provisioning times. They took advantage of the ability to get rapid access to raw computing power from public cloud providers using little more than a corporate credit card. This lead pundits to posit that IT's function had failed and that the public cloud was the One True Way. Thus the private cloud, a dedicated on-demand IT infrastructure within the four walls of an organization, was somehow not "true cloud," and public cloud providers argued that private cloud should not exist because it wasn't flexible or cheap. I call this the "holier than thou" argument.

????There are two problems with this idea. The first is an inherent contradiction: one cannot castigate IT departments for being inflexible when they are using private cloud to deliver a flexible, on-demand computing environment for their businesses. The second is that there are plenty of pragmatic business reasons why organizations find it easier and cheaper to deploy within existing data centers. Established, regulator-approved security and data privacy controls and processes are one example.

????In theory it shouldn't matter where computing is done, but in practice it matters a lot. As one Wall Street CIO put it at a roundtable I attended: "Of course risk is the issue. If I can run it [the application] on a private cloud and pass audit, why run it elsewhere?"

The hybrid cloud will continue to grow.

????Public cloud usage has driven a revolution in computing, especially for hard-to-forecast customer-facing applications. Private clouds are essential to organizations dealing with regulators, standards and other non-technical issues that are crucial to running business applications. The choice is driven by the needs of the business and the application, ensuring that hybrid clouds, making use of both public and private clouds as appropriate, will continue to be the pragmatic decision for most organizations.