New York, Oct. 22 -- America's second-largest employer, Amazon is set to replace over 500,000 jobs with robots as the company readies for its next major transformation.

The e-commerce giant recruited hundreds of thousands of warehouse workers, built a vast network of contract drivers, and led the way in using technology to hire, track, and manage its workforce.

Amazon's U.S. workforce has more than tripled since 2018, reaching nearly 1.2 million employees.

At newer facilities built for ultra-fast deliveries, Amazon is experimenting with warehouse models that employ very few humans.

Internal papers also outline the robotics team's long-term ambition to automate up to 75% of its operations.

"Nobody else has the same incentive as Amazon...