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The mental model can help you visualise a software application’s design and implementation as a non-developer. It is an abstraction of several typical architecture patterns used in software development. It provides a useful starting point for understanding how the project you’re working on is structured. The three layers of software applications closely resemble a specific software architecture pattern known as the Multilayered Architecture. For example, the presentation layer is responsible for the structure, styling, and interactivity of apps. The business logic layer is not responsible for displaying information or storing it.