In the 1970 stop-motion Christmas classic “Santa Claus Is Comin’ to Town,” Kris Kingle saves the day by singing the song “One Foot In Front of the Other” and saving Sombertown from the evil Winter Warlock and Burgermeister Meisterburger. Quite literally, that song is music to the ears of Zappos, the e-retailer best known for selling shoes on the Internet.

Of course, there is no stop motion during the busy holiday shipping season for Zappos and UPS, when the two businesses work together like Santa and his elves to serve millions of customers from Zappos’ end-of-runway location near Worldport.