Remarketing is a way to reconnect with users who have previously interacted with your website, app or advertisement. It gives you the opportunity to strategically place your ads right in front of the target audiences, when they are browsing through Google (or its partner websites) and helps remind the user to complete a purchase.
One way of making use of this type of banner ad is by showing the user what they have added to the cart on previously visited websites. Remarketing banners can also come in the shape as ads showing the user-related products to those previously browsed on the website.
