Investigate Causes of Increased Driver Wait Time

##### Scenario DoorDash noticed driver wait time at restaurants spiked last week compared with the previous week. ##### Question Walk me through how you would debug the increase in driver wait time. What metrics, segments, and analyses would you examine to find the root cause? If you confirm restaurant understaffing is responsible, what actions or experiments should DoorDash run to solve the problem? ##### Hints Decompose the end-to-end latency funnel, slice by restaurant, region, time of day, and order mix; compare staffing schedules vs. order volume; propose A/B or operational tests to cut wait.