How do you define a quality system architecture from your point of view?

A high-quality system architecture is characterized by the following features:

• Modularity: the system is divided into independent, loosely coupled components, which facilitates maintenance and development.
• Scalability: the architecture allows for easy expansion of functionality and increased load without significant changes.
• Maintainability: the code and structure are understandable, simplifying error correction and addition of new features.
• Testability: components are easily covered by automated tests.
• Performance: the architecture is optimized for speed and resource requirements.
• Security: data protection and vulnerability prevention aspects are considered.
• Compliance with requirements: the architecture reflects the business logic and project goals.

An example can be the use of design patterns (MVC, MVVM), clear separation of layers (presentation, business logic, data), as well as the use of Dependency Injection for dependency management.