Amazon’s announcement of one-day shipping for Prime members was the shot heard around the world for many retailers. Fast, two-day shipping has defined modern retail thanks to Amazon’s Prime’s guarantee, encouraging loyalty, repeat visits and influencing consumer expectations that anything ordered online will arrive within a mere couple of days. Next-day delivery pushed the barriers to entry even further for many retailers. That’s why when FedEx canceled its express delivery contract with Amazon, the air may have left the room for the company. With an investment of $800 million on the line this year alone for one-day shipping, will Amazon still be able to deliver on its promise without FedEx? Read more at Forbes.