As product managers, we all spend our time trying to better understand  what our customers really want. 

This can be a tricky thing to do. We  need to understand what motivates our customers in order to better  understand how we can provide them with the products that they will be  willing to buy. Product managers at some of the largest companies out  there, Amazon, Walmart, and Target, have decided that being able to  deliver products that customers have ordered the next day is the best  way to attract more customers. 

Just exactly how are they going to go  about doing this?