How does clean architecture help eliminate problems in the system?

A clean architecture helps eliminate problems in the system by enforcing strict separation of concerns and component independence. It revolves around business logic that does not depend on external details such as databases, UI, or frameworks. This allows:

• Easy testing of business logic without setting up infrastructure.
• Simplified maintenance and development, as changes in one part do not directly affect others.
• Flexibility in replacing technologies or tools without rewriting the entire system.

For example, in Python, layers can be distinguished as:

• Entities — business objects.
• Use Cases — scenarios implementing business logic.
• Interface Adapters — data transformation for external systems.
• Frameworks & Drivers — specific implementations like databases or web frameworks.

This approach helps avoid "spaghetti" code, reduces technical debt, and improves product quality.