Your question is Handling Backend Performance Bottlenecks. 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).
How do you handle performance bottlenecks in backend services? Explain how you would detect and isolate the bottleneck, choose among remediation options, coordinate implementation, and validate the result. Address trade-offs involving latency, throughput, reliability, cost, and delivery risk.