Quelle, a clothing catalogue company founded in 1927, implemented retargeting campaigns on Yandex.Direct over 5 months to bring back visitors who left the site before making a purchase. They segmented users and created ads tailored to different behaviors. This led to a 625% increase in conversion rate, 168% increase in orders, and 78% decrease in cost per revenue. After 5 months, Quelle's revenue from Yandex.Direct increased 10.5%, showing the success of their retargeting strategy.