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Diagnose Slow Application

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Your question is Diagnose Slow Application. 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).

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Problem

How would you diagnose a slow application?

Asked in the Techno Managerial stage. Explain how you would structure the investigation, distinguish application bottlenecks from infrastructure or dependency issues, and coordinate remediation. Describe the evidence you would collect, the tools or telemetry you would use, and how you would validate that performance improved without introducing regressions.