Reducing seller non-fulfillment on the Amazon marketplace

Amazon has found that many merchants on its marketplace put products up for sale and then never deliver the orders customers place. As the product manager, how would you solve this? ```hint Ask why before asking how Sellers who never deliver are not one group. Work out the different reasons an order goes undelivered before choosing fixes, because each reason calls for a different response. ``` ### Clarifying Questions - Does "not delivering" mean only orders that never ship, or also orders whose tracking never shows a delivery, and very late deliveries? - Is the problem limited to merchants who ship orders themselves, or does it also involve orders that Amazon's warehouses fulfill for sellers? - Is it concentrated among new seller accounts, particular categories, or cross-border sellers? - Is the main goal to protect buyers who already ordered, to stop these listings from appearing, or both? ### What a Strong Answer Covers - The distinct causes of non-delivery and how order and seller data would size each one - Who is harmed and how: buyers, honest sellers, and the marketplace's trust and costs - Fixes matched to causes across the seller lifecycle, from onboarding and listing to order handling and remedies - Prioritization that weighs stopping bad sellers against adding friction for legitimate ones - A primary non-delivery metric with guardrails for seller growth and wrongful enforcement ### Follow-up Questions - How would you tell a fraudulent new seller from an honest one who ran out of stock on their first few orders? - What happens for buyers who have already paid when a seller disappears? - If stricter checks slowed new seller sign-ups, how would you decide whether the trade was worth it?