Summary

This project delivers:

• Modular .NET 8 API for resolving allowed actions on bank cards
• Strict input validation and API key security
• Matrix-driven business logic, cleanly separated from infrastructure
• Environment-based DI: easily swap services and providers per environment
• Comprehensive testing: unit and integration coverage for all layers
• Automatic API docs via Swagger UI
• Container-ready: Docker support for easy deployment

The solution is designed for clarity, extensibility, and easy adaptation to real-world banking scenarios.