Measure a sales/CS motion you can't randomize across accounts

Causal inferenceHard

Problem. Customer Success rolled out a new engagement motion (e.g., proactive optimization reviews) to accounts, not at random. Leadership asks whether it drove expansion. 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.

← A/B a platform feature with few, whale-skewed accountsYour consumption metric is dominated by a few whales →