📕 A cookie is a text file dropped in your computer by a server (for instance the one hosting your website). Cookies allow websites to keep user data.

There are several kinds of cookies:

🍪 "Technical" or "Essential" cookies: they are necessary for the proper functioning of your website. For instance, they are required to know if a user is connected to his customer area, to save a shopping cart, to remember a website language, to memorize the connection credentials, to memorize the preferences for privacy, etc. It can also be statistics and audience measurements to determine the number of visitors on your websites, to know which sections are visited, etc.
🍪 The "Third Party" cookies: they are cookies dropped by vendors. The site administrator doesn't have any authority over these cookies which are managed by other companies. The only person who can read or modify the cookies information is the person who issues them.