Just imagine if you were a product manager at Amazon. What would one of  your biggest challenges be? There’s no problem with Amazon having what  your customers want – Amazon is huge and they’ve got a lot of warehouses.  No, your biggest problem would be just exactly how you were planning on  getting what your customer has ordered from your warehouse into their hands. Like a million times a day. Good news. Amazon thinks that they may have found a solution to this problem: hub.