Criteo was founded in Paris, France in 2005 by Jean-Baptiste Rudelle, Franck Le Ouay and Romain Niccoli. Criteo spent the first four years focused on R&D, and launched its first product in April 2008. In 2010, Criteo opened an office in Silicon Valley in an effort to enhance its profile in the USA. Criteo is a personalized retargeting company that works with Internet retailers to serve personalized online display advertisements to consumers who have previously visited the advertiser's website.