An HTTP cookie, often referred to simply as a cookie, is a small piece of data that is sent from a website to a user’s web browser, and is stored on the user’s computer or device. Cookies can be used to remember information about the user’s browsing activity on a particular website, such as login information or preferences, and can be accessed by the website again when the user visits the site in the future. Cookies are used by websites to personalize the browsing experience, track user behavior, and provide targeted advertising.