Presentation tier - To translate tasks and results to something the user can understand
Logic tier - Coordinates the application, processes commands, makes logical decisions and evaluations, and performs calculations. It also moves and processes data between the two surrounding layers.
Data tier - Here information is stored and retrieved from a database or file system.
N-Tier Architecture
N-tier architecture would involve dividing an application into three different tiers.
logic tier - this layer coordinates the application, processes commands, makes logical decisions and evaluations, and performs calculations. It also moves and processes data between the two surrounding layers.
(https://stackify.com/n-tier-architecture/)
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