The online retailer is said to be making big changes to how it packs customers' orders, with Italian-made CartonWrap machines - which cost $1 million each - seemingly scanning products as they move along a conveyor belt, and then setting them in custom-build boxes.
According to Reuters, the machines can pack between 600 and 700 an hour, which is thought to be four or five times the speed a human employee could manage.
Despite fears over what this could mean for jobs, Amazon - which confirmed the test run of the new technology - insisted there are plans in place if it is a success.
A spokesperson said: "We are piloting this new technology with the goal of increasing safety, speeding up delivery times, and adding efficiency across our network.
"We expect the efficiency savings will be re-invested in new services for customers, where new jobs will continue to be created."
The report added that the company looked into the possibility of adding two of the machines into dozens more of its warehouses.
This move would mean at least 24 human workers would be replaced at each plant.