SOA要求每个IT应用程序采用定义良好的接口来表示其支持的业务功能。
SOA requires each it application to have well-defined interfaces to represent the business function that it supports.
尽管如此，大多数的用户表示，与付费程序相比，他们更愿意选择有广告支持的免费程序。
Still, most users said they would prefer to get apps for free in return for accepting advertising rather than pay.
XDR为数据定义一个标准的表示来支持异构网络应用程序通信的开发。
XDR defined a standard representation for data to support the development of communicating heterogeneous network applications.
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