Composite applications have been built that use these services, and even legacy systems themselves have been enhanced by taking advantage of invoking new services.
已经构建了使用这些服务的组合应用程序，甚至遗留系统本身也已经通过新服务调用得到了增强。
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This article explained at the root level how composite applications can be built and then aggregated into a single user interface.
本文在基础层面上讨论了如何构建复合应用程序再将其聚合到单个用户界面中。
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Insist on service level performance metrics which help predict the end-to-end response times and capacity planning of servers when the composite application is built. Look at the other aspects like.