Design an A/B test for a new Gifting prompt — what's the OEC?

Experiment designHard

Problem. The team ships a new prompt that encourages viewers to gift subs. Design the A/B test: unit, metrics, and the Overall Evaluation Criterion.

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.

You can't A/B a price change — how do you measure its effect? →