Your question is Design Highly Available AWS 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).
Design a highly available architecture on AWS on the whiteboard, adding the necessary services, and explain why and how.
Asked in the onsite stage. Treat this as an end-to-end ML system design exercise. Clarify the workload, availability, latency, data, and compliance requirements before selecting services.
Address:
Do not assume a specific business domain. State assumptions explicitly and explain alternatives and tradeoffs.