Your question is Order Management System Design. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Order Management System Design with focus on SOLID principles and design patterns
Asked in the Round 2 LLD stage. Discuss the core domain model, order lifecycle, service boundaries, persistence choices, and appropriate design patterns. Reported follow-ups include database selection and exception handling in Spring Boot.
Address requirements, class interfaces, extensibility, transaction boundaries, concurrency, validation, error handling, and testability. Explain tradeoffs rather than presenting one mandatory implementation.