n-Tier architecture is a client-server software architecture in which the presentation, application processing, and data management are logically separated. The most common n-tier architecture is the three-tier architecture consisting of a presentation tier (UI), an application tier (business logic), and a data tier (database). N-tier architecture improves application maintainability, scalability, and reusability by decoupling the different layers. It is commonly used for enterprise applications, web applications, and distributed systems where separation of concerns is important.
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