Merchandise sits at the Amazon Phoenix Fulfillment Center in Goodyear, Arizona, in this file image from November 16, 2009. The White House on January 29, 2010 hailed a report of 5.7 percent economic growth in the fourth quarter as "the most positive news to date on the economy" and said the Obama administration's focus must remain on job creation. REUTERS/Rick Scuteri/Files (UNITED STATES - Tags: BUSINESS) - RTR29MCG
Reuters/Rick Scuteri
Where robots rule the roost.

Watch the robots that fulfill your Amazon order

By Zach Wener-Fligner

Last year on Cyber Monday, consumers spent a then-record $2.29 billion shopping online. This year, sales are expected to hit $2.6 billion (pdf). How does a massive online retailer like Amazon handle all that volume?

Robots. Swarming, darting robots that give the company’s million-square foot warehouse the efficiency of an ant farm.

Amazon recently released footage from the inside of its latest robot-teeming fulfillment center. Watch:

The robots were built by Kiva Systems, a robotics company that Amazon bought in 2012. Amazon now has over 15,000 of the Kiva bots across 10 fulfillment centers, according to TechCrunch.

Amazon will still need 80,000 seasonal employees to handle tasks requiring dexterity, like packing a box.

But the company’s need for human workers may dissipate as robots get smarter and more nimble—and as more customers demand same-day delivery on their Tickle Me Elmos.