Measure a co-experience feature you shipped to everyone
Measure impactHardProblem. Roblox shipped a co-experience feature (easier for friends to join each other) to all users at once. Leadership asks its impact on co-play and retention. With no clean control and effects that spread through the friend graph, how do you measure it?
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.