Your question is Secure, Performant Frontend Architecture. 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).
Describe your approach to designing a secure, performant frontend architecture.
Explain how you would structure the application, protect sensitive data and user actions, integrate with backend services, and maintain responsive performance. Discuss the assumptions you would clarify, the design decisions you would make, and how you would validate security, reliability, and performance in production.