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n-tier architecture was created to address the limitations of three-party architectures and to create robust, easy-to-maintain applications. In reality, n-tier architecture confirms the distribution of the application layer between different services and not the reproduction of the layers. The application layer consists of “business” components that are independent and specialized. They communicate with each other and can collaborate, and are installed on different workstations.

This architecture promotes the free distribution of business logic to facilitate the distribution of the load on all levels.

Figure 1.9. n-tier architecture

1 1 BDM is a medium launched in 2007 by HelloWork, aimed at web workers and connected professionals: https://www.blogdumoderateur.com.

2 2 Nova Spivack is an American entrepreneur: https://en.wikipedia.org/wiki/Nova_Spivack.

3 3 Joël de Rosnay is a French writer: https://fr.wikipedia.org/wiki/Joël_de_Rosnay.

4 4 https://www.wikipedia.com.

5 5 www.francoischarron.com.

6 6 mes.tn: Website of the Ministry of Higher Education and Scientific Research of Tunisia.