"Zillow Group, Inc., or merely Zillow, is an American online real estate database firm that was founded in 2006, and also was produced by Rich Barton and Lloyd Frink, former Microsoft executives and owners of Microsoft spin-off Expedia, Spencer Rascoff, a cofounder of Hotwire.com, David Beitel, Zillow's present principal modern technology police officer, and Kristin Acker, Zillow's current elderly vice president of experience layout.

In 2018, Zillow signed a partnership with Century 21 Canada to start detailing Canadian buildings on the site, noting the first country outside the United States that Zillow.com supports. Barton is the existing Chief Executive Officer of Zillow, Inc."