Have you had experience working with a layered architecture?

Yes, a layered architecture involves dividing the application into several logical levels, each responsible for its own area of responsibility. Typically, the layers are:

• Presentation Layer (UI) — responsible for user interaction.
• Business Logic Layer — implements the rules and logic of the application.
• Data Access Layer — responsible for interacting with the database or external services.

This separation simplifies maintenance, testing, and development of the code. In Go, this can be implemented, for example, through packages, where each layer is a separate package with a clearly defined interface.