"Zillow Group, Inc., or simply Zillow, is an American on-line real estate database business that was founded in 2006, and also was created by Rich Barton and Lloyd Frink, former Microsoft executives as well as founders of Microsoft spin-off Expedia, Spencer Rascoff, a cofounder of Hotwire.com, David Beitel, Zillow's present chief modern technology police officer, and Kristin Acker, Zillow's existing elderly vice president of experience layout.

In 2018, Zillow signed a partnership with Century 21 Canada to start noting Canadian buildings on the site, marking the first country outside the USA that Zillow.com supports. Barton is the current CEO of Zillow, Inc."