You can apply it to one tier in an architecture and to multiple tiers across the enterprise architecture.

你可以在架构中的一层上应用它，也可以在贯穿企业架构的多个层上来应用它。

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If the goal is to tie together a complicated business process across multiple requests, then state management should reside on the business tier.

如果目标是将跨多个请求的复杂业务过程联系在一起，那么状态管理应该在业务层上进行。

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N-tier architectures rely on the interoperation of multiple computer systems, each of which has its own performance considerations depending on the types of services that it provides.

n层架构依赖于多个计算机系统的相互操作，根据所提供的服务的类型，每个计算机系统具有不同的性能考虑因素。

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The Queen's speech is likely to propose an end to the multiple-tier appeal system for asylum seekers, replacing it with a single level of adjudication.

BBC: Call for radical asylum changes

Many auditors were fired over rising Sarbanes-Oxley fees and some companies switched from Big 4 to next tier, some multiple times, chasing lower fees and an auditor that would go easier on them.

FORBES: Auditor Rotation Proposal Just More Spin