what is mean by remarketing?

Remarketing, sometimes referred to as retargeting, is the strategy of showing relevant advertisements to users who have already visited or interacted with your website. Remarketing is the process of employing a javascript tag (sometimes referred to as a pixel) to put a cookie in the user's browser.

Even if you are unfamiliar with the term "remarketing," you probably understand the idea. Remarketing is the practise of interacting with audiences that have already interacted with your brand in order to persuade them to carry out an action that may be of interest to them, like converting.