Did adopting an AI coding tool actually make engineers faster?

Measure impactHard

Problem. The org rolled out an AI coding assistant; adoption is voluntary and growing. Leadership believes it's a big win. How do you measure whether it actually made engineers faster?

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.