Welcome to your interview.
The question is on your right: Measure Real Feature Value. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
You've shipped a product change and want to understand its full impact. The team cares about both immediate engagement signals and longer-term retention, and wants to avoid mistaking short bursts of activity for durable value.
How would you analyze whether a feature is creating real user value or just short-term engagement?