服务通信、交互和执行抽象都已完成，因此下一个步骤就是在服务间建立经过良好定义的接口。
Service communication, interaction, and execution abstraction were in place, so the next key step was to establish well-defined interfaces between services.
框架在幕后执行了通信、数据处理及所有其他棘手的工作。
Communications, data handling, and all other dirty work are performed by the frameworks behind the scenes.
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