AO是ESRI公司ArcGIS家族中应用程序的开发平台，它是基于Microsoft COM技术所构建的一系列COM组件集。应该澄清的是到目前为止，AO还不是一个独立的应用产品, 是依附在你的ArcGIS Desktop产品中的软件开发包。-AO is a family of ESRI, ArcGIS application development platform, which is based on Microsoft COM technology built a set of COM components. Should be clarified that so far, AO is not a separate application products, is dependent on your ArcGIS Desktop products in the Software Development Kit.