How Amazon Built Its One-Day Delivery Supply Chain

In 2019, Amazon announced it would convert Prime shipping from two days to one day. Most people saw a marketing promise. Engineers saw a logistics nightmare. This episode unpacks how Amazon rebuilt its fulfillment network — restructuring inventory placement, rethinking sortation center algorithms, and launching its own air hub in Cincinnati — to make one-day delivery economically viable across millions of SKUs. Lucas and Luna walk through the key architectural decisions: how Amazon used machine learning to predict demand at the zip-code level, decoupled its fulfillment centers from its transportation layer, and absorbed a multi-billion-dollar cost that competitors couldn't replicate. They also touch on the trade-offs: higher inventory carrying costs, pressure on warehouse labor, and the environmental toll of speed. A grounded look at how the world's most demanding logistics system was rearchitected from the inside out. #Amazon #OneDayDelivery #SupplyChain #Logistics #Fulfillment #MachineLearning #InventoryManagement #SortationCenters #PrimeAir #CincinnatiAirHub #LastMileDelivery #OperationsResearch #Business #Technology #Engineering #FexingoBusiness #BusinessPodcast #CTOPodcast Keep every episode free: buymeacoffee.com/fexingo