IaaS，PaaS，SaaS 的区别

Author： cfscc
发布时间：August 10, 2020
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Categories：服务器运维

<h1 class="asset-name entry-title" style="margin: 0.4em 0px 0.2em; padding: 0px 0px 0.2em; list-style-type: none; font-weight: 500; border-style: none none solid; border-bottom-width: 1px; border-bottom-color: rgb(211, 211, 211); font-size: 2.88em; letter-spacing: -0.03em; line-height: 72px; font-family: &#39;Trebuchet MS&#39;, Arial, &#39;Lucida Grande&#39;, Verdana, Lucida, Helvetica, sans-serif; white-space: normal; word-spacing: 2.4px; background-color: rgb(245, 245, 213);">IaaS，PaaS，SaaS 的区别</h1><p class="vcard author" style="margin-top: 1em; margin-bottom: 0px; margin-left: 0.8em; padding: 0px; list-style-type: none; border: none; color: rgb(85, 102, 119); font-size: 1.6em; line-height: 28.8px;">作者：&nbsp;<a class="fn url" href="http://www.ruanyifeng.com/" style="margin: 0px; padding: 0px; list-style-type: none; text-decoration: none; border: none; color: rgb(85, 102, 119);">阮一峰</a>日期：&nbsp;<a href="http://www.ruanyifeng.com/blog/2017/07/" style="margin: 0px; padding: 0px; list-style-type: none; text-decoration: none; border: none; color: rgb(85, 102, 119);">2017年7月23日</a>越来越多的软件，开始采用云服务。云服务只是一个统称，可以分成三大类。<img src="/usr/uploads/2020/08/10/1597049483221613.jpg" alt="" title="" style=""><blockquote style="margin: 2em; padding: 1em; list-style-type: none; border: 0.3em solid rgb(224, 223, 204); border-radius: 1em; font-family: Consolas, Monaco, &#39;Andale Mono&#39;, monospace; text-shadow: white 0px 1px; overflow: auto; background-color: rgb(245, 242, 240);"><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>IaaS：基础设施服务，Infrastructure-as-a-service</li><li>PaaS：平台服务，Platform-as-a-service</li><li>SaaS：软件服务，Software-as-a-service</li></ul></blockquote>它们有什么区别呢？IBM 的软件架构师 Albert Barron 曾经使用披萨作为比喻，<a href="https://www.linkedin.com/pulse/20140730172610-9679881-pizza-as-a-service" target="_blank" style="margin: 0px; padding: 0px; list-style-type: none; border: none; color: rgb(17, 34, 51);">解释</a>这个问题。David Ng 进一步<a href="https://m.oursky.com/saas-paas-and-iaas-explained-in-one-graphic-d56c3e6f4606" target="_blank" style="margin: 0px; padding: 0px; list-style-type: none; border: none; color: rgb(17, 34, 51);">引申</a>，让它变得更准确易懂。请设想你是一个餐饮业者，打算做披萨生意。<img src="/usr/uploads/2020/08/10/1597049484428253.jpg" alt="" title="" style="">你可以从头到尾，自己生产披萨，但是这样比较麻烦，需要准备的东西多，因此你决定外包一部分工作，采用他人的服务。你有三个方案。（1）方案一：IaaS他人提供厨房、炉子、煤气，你使用这些基础设施，来烤你的披萨。<img src="/usr/uploads/2020/08/10/1597049487319367.jpg" alt="" title="" style="">（2）方案二：PaaS除了基础设施，他人还提供披萨饼皮。<img src="/usr/uploads/2020/08/10/1597049488710837.jpg" alt="" title="" style="">你只要把自己的配料洒在饼皮上，让他帮你烤出来就行了。也就是说，你要做的就是设计披萨的味道（海鲜披萨或者鸡肉披萨），他人提供平台服务，让你把自己的设计实现。<img src="/usr/uploads/2020/08/10/1597049489879331.jpg" alt="" title="" style="">（3）方案三：SaaS他人直接做好了披萨，不用你的介入，到手的就是一个成品。你要做的就是把它卖出去，最多再包装一下，印上你自己的 Logo。<img src="/usr/uploads/2020/08/10/1597049493111390.jpg" alt="" title="" style="">上面的三种方案，可以总结成下面这张图。<img src="/usr/uploads/2020/08/10/1597049493301504.png" alt="" title="" style="">从左到右，自己承担的工作量（上图蓝色部分）越来越少，IaaS &gt; PaaS &gt; SaaS。对应软件开发，则是下面这张图。<img src="/usr/uploads/2020/08/10/1597049494691342.jpg" alt="" title="" style="">SaaS 是软件的开发、管理、部署都交给第三方，不需要关心技术问题，可以拿来即用。普通用户接触到的互联网服务，几乎都是 SaaS，下面是一些例子。<blockquote style="margin: 2em; padding: 1em; list-style-type: none; border: 0.3em solid rgb(224, 223, 204); border-radius: 1em; font-family: Consolas, Monaco, &#39;Andale Mono&#39;, monospace; text-shadow: white 0px 1px; overflow: auto; background-color: rgb(245, 242, 240);"><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>客户管理服务 Salesforce</li><li>团队协同服务 Google Apps</li><li>储存服务 Box</li><li>储存服务 Dropbox</li><li>社交服务 Facebook / Twitter / Instagram</li></ul></blockquote>PaaS 提供软件部署平台（runtime），抽象掉了硬件和操作系统细节，可以无缝地扩展（scaling）。开发者只需要关注自己的业务逻辑，不需要关注底层。下面这些都属于 PaaS。<blockquote style="margin: 2em; padding: 1em; list-style-type: none; border: 0.3em solid rgb(224, 223, 204); border-radius: 1em; font-family: Consolas, Monaco, &#39;Andale Mono&#39;, monospace; text-shadow: white 0px 1px; overflow: auto; background-color: rgb(245, 242, 240);"><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>Heroku</li><li>Google App Engine</li><li>OpenShift</li></ul></blockquote>IaaS 是云服务的最底层，主要提供一些基础资源。它与 PaaS 的区别是，用户需要自己控制底层，实现基础设施的使用逻辑。下面这些都属于 IaaS。<blockquote style="margin: 2em; padding: 1em; list-style-type: none; border: 0.3em solid rgb(224, 223, 204); border-radius: 1em; font-family: Consolas, Monaco, &#39;Andale Mono&#39;, monospace; text-shadow: white 0px 1px; overflow: auto; background-color: rgb(245, 242, 240);"><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>Amazon EC2</li><li>Digital Ocean</li><li>RackSpace Cloud</li></ul></blockquote>微软的 Azure 云服务有一张图，解释这三种模式的差异。<img src="/usr/uploads/2020/08/10/1597049495183518.jpg" alt="" title="" style="">上图中，绿色的部分是云服务商决定的，紫色的部分是用户决定的。可以看到，SaaS 模式下用户没有任何自主权，只能使用给定的应用程序；PaaS 模式下可以自己安装应用程序，但是不能定制操作系统；IaaS 模式下则是云服务商提供（虚拟的）硬件，从操作系统开始都可以自己选择和定制。参考链接<ul style="list-style-type: none;" class=" list-paddingleft-2"><li><a href="https://m.oursky.com/saas-paas-and-iaas-explained-in-one-graphic-d56c3e6f4606" target="_blank" style="margin: 0px; padding: 0px; list-style-type: none; border: none; color: rgb(17, 34, 51);">SaaS, PaaS and IaaS explained in one graphic</a>, by David Ng</li><li><a href="https://www.computenext.com/blog/when-to-use-saas-paas-and-iaas/" target="_blank" style="margin: 0px; padding: 0px; list-style-type: none; border: none; color: rgb(17, 34, 51);">When to use SaaS, PaaS, and IaaS</a>, by Eamonn Colman</li></ul>（完）<h3 style="margin: 0.4em 0px 0.2em; padding: 0px 0px 0.2em; list-style-type: none; border-style: none none solid; border-bottom-width: 1px; border-bottom-color: gray; color: rgb(85, 102, 119); font-size: 1.92em; letter-spacing: -0.03em;">文档信息</h3><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>版权声明：自由转载-非商用-非衍生-保持署名（<a href="http://creativecommons.org/licenses/by-nc-nd/3.0/deed.zh" style="margin: 0px; padding: 0px; list-style-type: none; text-decoration: none; border: none; color: rgb(85, 102, 119);">创意共享3.0许可证</a>）</li><li>发表日期：&nbsp;<abbr class="published" title="2017-07-23T11:20:46+08:00" style="margin: 0px; padding: 0px; list-style-type: none; border: none; color: rgb(61, 61, 61);">2017年7月23日</abbr></li></ul> <p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">编译：老夫子<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">原文：https://www.bmc.com/blogs/saas-vs-paas-vs-iaas-whats-the-difference-and-how-to-choose/<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">从小型企业到全球企业，云都是一个非常热门的话题，它是一个非常广泛的概念，涵盖了很多在线领域。 无论是应用程序还是基础架构部署，当您开始考虑将业务转移到云时，了解各种云服务的差异和优势比以往任何时候都更加重要。<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">通常有三种云服务模型：SaaS（软件即服务），PaaS（平台即服务）和IaaS（基础架构即服务）。 每个都有自己的好处和差异。为了您的组织能作出最佳选择，您有必要了解SaaS，PaaS和IaaS之间的差异。<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">下图总结了三种模型的主要差别：<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><img alt="" class="has" height="453" src="https://blogs.bmc.com/wp-content/uploads/2017/09/iaas-paas-saas-comparison-1024x759.jpg" width="612"/><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;<h1 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 28px; color: rgb(79, 79, 79); line-height: 36px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h1><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS：软件即服务<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">软件即服务（也称为云应用程序服务）代表了云市场中企业最常用的选项。 SaaS利用互联网向其用户提供应用程序，这些应用程序由第三方供应商管理。 大多数SaaS应用程序直接通过Web浏览器运行，不需要在客户端进行任何下载或安装。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS交付<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">由于其网络传输模式，SaaS无需在每台计算机上下载和安装应用程序，而在每台计算机上下载和安装应用程序正是IT员工的噩梦。 通过SaaS，供应商可以管理所有潜在的技术问题，例如数据、中间件，服务器和存储，因此企业可以简化其维护和支持。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS的优势<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS通过大大减少安装，管理和升级软件等繁琐任务所花费的时间和金钱，为员工和公司提供了许多好处。 这让技术人员可以花更多时间来处理组织内更紧迫的事情和问题。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS的特点<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">有方面可以帮助您确定何时使用SaaS：<ul style="list-style-type: none;" class=" list-paddingleft-2"><li>在统一的地方管理</li><li>托管在远程服务器上</li><li>可通过互联网访问</li><li>用户不负责硬件或软件更新</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"></ul><h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">何时使用SaaS<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS在许多场景情中是最有利的，包括：<ul style="list-style-type: none;" class=" list-paddingleft-2"><li>如果您是一家初创公司或小公司，需要快速启动电子商务，没有时间处理服务器问题或软件</li><li>适用于需要协作的短期项目</li><li>如果您需要不常用的应用程序，例如税务软件</li><li>适用于需要通过Web和移动访问的应用程序</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"></ul><h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS的例子<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">Google Apps、Dropbox、Salesforce、Cisco WebEx、Concur和GoToMeeting等<h1 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 28px; color: rgb(79, 79, 79); line-height: 36px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h1><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS：平台即服务<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">云平台服务或平台即服务（PaaS）为某些软件提供云组件，这些组件主要用于应用程序。 PaaS为开发人员提供了一个框架，使他们可以基于它创建自定义应用程序。所有服务器，存储和网络都可以由企业或第三方提供商进行管理，而开发人员可以负责应用程序的管理。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS的交付<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS的交付模式类似于SaaS，除了通过互联网提供软件，PaaS提供了一个软件创建平台。该平台通过Web提供，使开发人员可以自由地专注于创建软件，同时不必担心操作系统、软件更新，存储或基础架构。<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS允许企业使用特殊的软件组件设计和创建内置于PaaS中的应用程序。由于具有某些云特性，这些应用程序或中间件具有可扩展性和高可用性。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS优势<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">无论您的公司规模如何，使用PaaS都有很多优势：<ul style="list-style-type: none;" class=" list-paddingleft-2"><li>使应用程序的开发和部署变得简单且经济高效</li><li>可扩展</li><li>高度可用</li><li>使开发人员能够创建自定义应用程序，而无需维护软件</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>大大减少了编码量</li><li>自动化业务策略</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>允许轻松迁移到混合模型</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"></ul><h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS的特点<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS具有许多将其定义为云服务的特征，包括：<ul style="list-style-type: none;" class=" list-paddingleft-2"><li>它基于虚拟化技术，这意味着随着业务的变化，资源可以轻松扩展或缩小</li><li>提供各种服务以协助开发，测试和部署应用程序</li><li>许多用户可以访问相同的开发应用程序</li><li>Web服务和数据库是集成的</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"></ul><h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">何时使用PaaS<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">在许多情况下，使用PaaS是有益的甚至是必要的。 如果有多个开发人员在同一个开发项目上工作，或者必须包含其他供应商，PaaS可以为整个过程提供极大的速度和灵活性。 如果您希望能够创建自己的自定义应用程序，PaaS也是有益的。 云服务还可以大大降低成本，并且可以简化您在快速开发或部署应用程序时出现的一些挑战。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">PaaS的例子<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">AWS Elastic Beanstalk、Windows Azure、Heroku、Force.com、Google App Engine，Apache Stratos，OpenShift。<h1 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 28px; color: rgb(79, 79, 79); line-height: 36px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h1><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">IaaS：基础架构即服务<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">云基础架构服务称为基础架构即服务（IaaS），由高度可扩展和自动化的计算资源组成。 IaaS是完全自助服务，用于访问和监控计算、网络，存储和其他服务等内容，它允许企业按需求和需要购买资源，而不必购买全部硬件。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">IaaS交付<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">IaaS通过虚拟化技术为组织提供云计算基础架构，包括服务器、网络，操作系统和存储等。这些云服务器通常通过仪表盘或API提供给客户端，IaaS客户端可以完全控制整个基础架构。 IaaS提供与传统数据中心相同的技术和功能，而无需对其进行物理上的维护或管理。 IaaS客户端仍然可以直接访问其服务器和存储，但它们都通过云中的“虚拟数据中心”。<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">与SaaS或PaaS相反，IaaS客户端负责管理应用程序、运行时、操作系统，中间件和数据等方面。但是，IaaS的提供商管理服务器、硬盘驱动器、网络，虚拟化和存储。一些提供商甚至在虚拟化层之外提供更多服务，例如数据库或消息队列。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">IaaS的优势<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">选择IaaS有很多好处，例如：<ul style="list-style-type: none;" class=" list-paddingleft-2"><li>是最灵活的云计算模型</li><li>轻松实现存储、网络，服务器和处理能力的自动部署</li><li>可以根据消耗量购买硬件</li><li>使客户能够完全控制其基础架构</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>可以根据需要购买资源</li><li>高度可扩展</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"></ul><h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">IaaS的特点<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">在考虑IaaS时要考虑的一些特征是：<ul style="list-style-type: none;" class=" list-paddingleft-2"><li>资源可作为服务提供</li><li>费用因消费而异</li><li>服务高度可扩展</li><li>通常在单个硬件上包括多个用户</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"><li>为组织提供对基础架构的完全控制</li><li>动态灵活</li></ul><ul style="list-style-type: none;" class=" list-paddingleft-2"></ul><h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">何时使用IaaS<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">与SaaS和PaaS一样，有些特定场景使用IaaS是最好的。如果您是初创公司或小公司，IaaS是一个很好的选择，因此您不必花费时间或金钱来创建硬件和软件。 有些大型组织希望完全控制其应用程序和基础架构，同时又想仅购买实际消耗或需要的硬，IaaS对他们也是有益的。对于快速发展的公司而言，IaaS可能是一个不错的选择，因为您不必在需求变化和发展时承诺使用特定的硬件或软件。如果您不确定新应用程序需要什么，这也会有所帮助，因为根据需要可以根据需要进行扩展或缩小。<h2 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 24px; color: rgb(79, 79, 79); line-height: 32px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h2><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">IaaS的例子<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">DigitalOcean，Linode，Rackspace，AWS，Cisco Metapod，Microsoft Azure，Google Compute Engine（GCE）<h1 style="box-sizing: border-box; outline: 0px; margin: 8px 0px 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; font-size: 28px; color: rgb(79, 79, 79); line-height: 36px; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);"><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a><a style="box-sizing: border-box; outline: none; margin: 0px; padding: 0px; font-weight: normal; cursor: pointer; color: rgb(78, 161, 219); word-wrap: break-word;"></a>&nbsp;</h1><p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">SaaS vs PaaS vs IaaS<p style="box-sizing: border-box; outline: 0px; margin-top: 0px; margin-bottom: 16px; padding: 0px; font-family: &#39;Microsoft YaHei&#39;, &#39;SF Pro Display&#39;, Roboto, Noto, Arial, &#39;PingFang SC&#39;, sans-serif; color: rgb(77, 77, 77); line-height: 26px; overflow-x: auto; word-wrap: break-word; white-space: normal; background-color: rgb(255, 255, 255);">总体而言，每种云模型都提供了自己的特定功能和特性，因此您的解组织了解这些差异至关重要。 无论您是在寻找云存储软件，还是一个能创建定自定义应用程序的平滑平台，，或者希望完全控制整个基础架构而无需对其进行物理维护，您可以使用云服务。 无论您选择哪个选项，迁移到云都是业务和技术的未来，并且很必要让大家正确的了解这一点。

Last modification：August 10, 2020

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IaaS，PaaS，SaaS 的区别

cfscc • 2020 年 08 月 10 日

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IaaS，PaaS，SaaS 的区别

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