Metrics question

What is the most important metric for Uber Eats? Why?

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Ability to pick and defend a single north star metric for a three sided marketplace of eaters, restaurants, and couriers.

State the business model, Uber Eats connects eaters, restaurants, and couriers, and success requires balance across all three.
Propose a candidate north star, completed orders per active eater per month, since it reflects real repeat demand.
Explain why this beats alternatives like GMV or restaurant count, which can rise without reflecting real habit.
Note the guardrails needed alongside it, courier earnings per hour and on time delivery rate.
Acknowledge the trade off, focusing narrowly on one metric can hide problems on the other two sides.

Picks a specific, defensible metric, orders per active eater per month, over vague ones like growth or revenue.
Explains the reasoning clearly, it captures habit formation, which predicts long term retention better than one time spikes.
Pairs it with named guardrails, courier pay per hour and delivery time, showing awareness of the three sided marketplace.

Naming GMV or revenue as the most important metric with no explanation of why it can mislead.
Ignoring the courier and restaurant sides of the marketplace entirely.
No guardrail metrics mentioned alongside the chosen north star.

How would you weigh this metric differently for a new city versus a mature market?
What would make you change your mind about this being the right metric?