How Amazon’s robot warehouses swing into action the moment you press ‘buy’

In further evidence of the "automation increases jobs" argument, Amazon has recently released footage showing how robots in their warehouses make it quicker and easier for "associates" (=people) to pick and pack your order. This increased productivity means that the warehouses with the most robots are the most profitable, and hence employ the most people. The article does not mention whether Amazon's staff are profiting from this increased productivity the way UPS' did (https://rob.al/2kEQbbH) when they massively increased instrumentation on their trucks to achieve a similar level of improved efficiency.
https://rob.al/2IZ3GRP
If you’re like us, you probably spend a little too much time on Amazon buying stuff you may or may not need. But what happens after you click the “buy” button? How does Amazon get you your stuff so…