A new data center opened and quality improved. Did it cause it?
Measure impactHardProblem. NVIDIA brought a new data center online serving one region. In the six weeks after, that region's flawless session rate improved noticeably and churn fell. Finance wants to know the return before approving two more. What do you tell them?
Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.