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Three-tier system, meaning a system that has three distinct levels, may refer to:
- Multitier architecture, a computing system architecture that may typically have three tiers, composed of a presentation tier, a domain logic tier, and a data storage tier
- Three-tier system (alcohol distribution), a system of alcohol distribution involving producers, distributors, and retailers
- Three-tier education, an education system involving a primary school, middle school, and high school
Source of the article : Wikipedia
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