DoorDash is considering allowing bicycle couriers (bike dashers) to fulfill deliveries in a city that is currently served mostly by car/scooter dashers.
How would you evaluate whether adding bike dashers is a good idea?
Please address all of the following:
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Historical analysis:
What historical marketplace data would you use to decide whether this city or specific zones are suitable for bike dashers?
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Success criteria:
What primary metrics, secondary metrics, and guardrail metrics would you track? Consider consumer experience, merchant experience, dasher experience, and unit economics.
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Experiment design:
How would you run an A/B test or marketplace experiment to estimate the causal impact of enabling bike dashers?
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Network effects / interference:
Adding bike dashers can affect dispatching and matching for all orders, not just treated ones. How would you handle these spillover effects in the experiment design and analysis?
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Decision-making:
What results would convince you to launch, limit, or roll back the change?
Assume you have access to order-level, merchant-level, dasher-level, zone-level, dispatch, weather, and geography data.