Half of repairs now happen through other apps. How many did auto-repair actually add?

Measure impactHard

Problem. Plaid launched automatic repair: when a broken connection's user logs in to the same bank in another app, their broken connections get fixed too. Now about half of all repairs happen this way, and the team wants to report "auto-repair saved millions of connections." How much did it actually add?

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.

← Should three products move onto the shared transaction foundation model?You're the first data scientist on a central ML team. How do you show it's worth it? →