Your question is Distributed System Testing Strategy. 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 scalable system and its testing strategy, including test strategy for distributed systems.
Asked in the system design stage. Explain how you would validate an end-to-end ML system across local, integration, staging, and production environments. Cover functional correctness, model quality, reliability, observability, data and feature validation, deployment safety, and distributed-system failure testing. Discuss how you would prioritize tests when requirements, traffic, and infrastructure details are not provided.