如今，企业系统解决方案一般采用多层的系统架构，包含用于表示、控制器、应用、领域，和持久性的分别的层。
Enterprise system solutions nowadays commonly adopt a multi-layered system architecture, with separate layers for presentation, controller, application, domain, and persistence.
应用程序和系统架构师如今具备从Internet和intranet基础设施设计到多层冗余硬件和软件终端等广博的知识。
Application and system architects today have a broad base of knowledge from Internet and Intranet infrastructure designs to multi-layered redundant hardware and software backends.
在多层架构的分布式软件系统中，如何在层间交换数据，采用何种粒度的对象交换数据，是系统构建时经常遇到的问题。
It is a common problem for the designer to exchange data in different layers and use which kind of granularity in multi-layers architecture software system.
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