The requestor application invokes services offered by one or more provider applications by sending request messages and processing response messages.

一个或多个提供者应用程序通过发送请求消息并处理响应消息来提供服务，请求者应用程序调用这些服务。

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PaaS is a type of cloud service in which the provider delivers not only on-demand hardware and operating-system services, but also application platforms and solution stacks.

PaaS 是一种云服务类型，其中供应商不但提供按需硬件和操作系统服务，而且还提供应用程序平台和解决方案堆栈。

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The sample Web services provider application constitutes the model layer of the solution.

示例Web服务提供者应用程序组成了解决方案的模型层。

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Roundbox, a leading mobile software provider, is providing non-real time data services that power the Smartphone coupon application, as well as the Electronic Services Guide (ESG) for both innovative applications for ATSC MDTV.

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