https://www.ibm.com/cloud/learn/three-tier-architecture
What is three-tier architecture?
Three-tier architecture is a well-established software application architecture that organizes applications into three logical and physical computing tiers: the presentation tier, or user interface; the application tier, where data is processed; and the data tier, where the data associated with the application is stored and managed.
The chief benefit of three-tier architecture is that because each tier runs on its own infrastructure, each tier can be developed simultaneously by a separate development team, and can be updated or scaled as needed without impacting the other tiers.
For decades three-tier architecture was the prevailing architecture for client-server applications. Today, most three-tier applications are targets for modernization, using cloud-native technologies such as containers and microservices, and for migration to the cloud.
https://www.youtube.com/watch?v=ulprqHHWlng
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