European retail clients include Galeria, Mister Spex, TAKKT, Tamaris, Tom Tailor, Vitafy, and Westwing. Advertima. Retail media is a growing marketing channel. In-store retail media holds the greatest potential for growth, as more than 80% of shoppers are expected to continue shopping in physical stores over the next decade. Advertima tackles the challenge of in-store retail media by creating addressable audiences in physical retail environments, similar to digital advertising capabilities.