Imagine a farmer needing to transport a chicken, a fox, and a bag of grain across a river. There's a small boat that can only carry the farmer and one other thing at a time. Here's the catch: the fox loves chicken (and the chicken loves grain), so the farmer can't leave them together unsupervised.

How can the farmer get everything across the river safely and efficiently? 

Amazon is the king of fast delivery – it pioneered the free two-day shipping model customers have come to expect. As competitors like Walmart and Target ramp up delivery speeds to take a piece of the e-commerce pie, Amazon is overhauling its distribution network and investing heavily in its drone delivery program, more automation and electrifying its delivery fleet. 

WSJ visits a same-day facility to explore Amazon’s fast-shipping strategy. 

According to recent Occupational Safety and Health Administration data, workers at Amazon fulfillment centers were seriously injured about twice as often as employees in other warehouses. To improve workplace safety, Amazon has been increasing its investment in robotic helpers to reduce injuries among its employees. With access granted for the first time ever, "Sunday Morning" correspondent David Pogue visited the company's secret technology facility near Seattle to observe some of the most advanced warehouse robots yet developed, and to experience how high-tech tools are being used to aid human workers. 

The order processing workflow is the series of steps a company takes to fulfill a customer's order, from the moment it's placed to the time it's delivered. It's the behind-the-scenes magic that ensures a customer receives their purchase accurately and efficiently.