Retargeting, also known as remarketing, displays ads to people who have visited a website but did not complete a purchase, in order to encourage them to return to the site and buy products. It is proven to increase conversion rates and sales. Statistics show that retargeting campaigns increased sales by 18-21% for various retailers and increased ad performance and ROI by 2-3 times compared to regular site-targeted campaigns. Retargeting focuses ads on engaged website visitors to improve conversion rates.