Welcome to your interview.
The question is on your right: Multi-Tier Test Strategy. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
What is your approach to test management, and how do you define a comprehensive test strategy for a multi-tier application?