What is a cookie in digital marketing?

A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size, and other display preferences) over time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another. Digital marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third-party advertisers. When combined with other information, such as the user’s IP address, cookies can also be used to geolocate individuals.