---
type: archive
area: archive
status: archived
date: 2026-05-03
created: 2026-05-03
updated: 1980-01-01
tags:
  - archive
---
#### Advantage n-tiers:
- Découper techniquement le logiciel en une suite de « couches de composants » .
- Chaque couche possède une responsabilité spécifique dans l’application
- Découpler au maximum une couche de l'autre afin de réduire l'impact des évolutions futures sur l'application.

#### N-Tier And N-Layer Architecture
**N-Tier architecture** usually has at least three logical parts, each located on a separate physical server. Each tier is responsible for a specific functionality. Communication between tiers is typically asynchronous in order to support better scalability.

**N-Layers** of application may reside on the same physical computer (same tier) and the components in each layer communicate with the other layer’s components by well-defined interfaces. Layered architecture focuses on grouping related functionality within an application into distinct layers stacked vertically on top of each other.