three-tier architecture

Three-tier architecture divides a software application into three interconnected layers to improve organization, scalability, and maintenance. The **presentation layer** is where users interact, like a website or app interface. The **logic layer** processes data, handles business rules, and makes decisions—think of it as the engine behind the scenes. The **data layer** manages storage, retrieval, and updating of information, typically using databases. This separation allows each layer to be developed, maintained, and scaled independently, leading to more flexible and efficient applications.