"It’s hard to overstate how thoroughly this move will shake up the retail industry. Same-day delivery has long been the holy grail of Internet retailers, something that dozens of startups have tried and failed to accomplish…Can Amazon pull it off? Amazon is investing $130 million in new facilities in New Jersey that will bring it into the backyard of New York City; another $135 to build two centers in Virginia that will allow it to service much of the mid-Atlantic; $200 million in Texas; and more than $150 million in Tennessee and $150 million in Indiana to serve the middle of the country. Its plans for California are the grandest of all. This year, Amazon will open two huge distribution centers near Los Angeles and the San Francisco Bay Area, and over the next three years it might open as many as 10 more in the state. In total, Amazon will spend $500 million and hire 10,000 people at its new California warehouses."

Amazon same-day delivery: How the e-commerce giant will destroy local retail. - Slate Magazine