Amazon's secret hub network

Amazon has quietly built a network of 58 Prime Now hubs to fulfill one- and two-hour deliveries. But the 50,000- to 60,000-sq.-ft. warehouses serve the same purpose as a store doubling as a fulfillment center, as the retailer tries to reduce shipping costs.

"This has probably been the most secretive piece of data that the company has not been talking about,"  said Marc Wulfraat, president of logistics consultancy MWPVL, in a presentation hosted by SunTrust. Story