Clean Architecture
Clean Architecture is a software design philosophy that emphasizes separation of concerns and independence from external frameworks, databases, and user interfaces. It organizes code into concentric layers with dependencies pointing inward, ensuring that business logic remains isolated and testable. This approach promotes maintainability, scalability, and flexibility in software systems.
Developers should learn Clean Architecture when building complex, long-lived applications where business rules are critical and likely to evolve, such as enterprise systems, financial software, or large-scale web services. It is particularly useful in scenarios requiring high testability, as it decouples core logic from external dependencies, making unit testing straightforward and reducing technical debt over time.