Cookies are small files containing data sent by a website to store in user’s browser. Cookies are widely used on the web for storing information and providing a personalized browsing experience to users. Some common uses of cookies are:
- Remember a user’s login credentials
- Remember information like the items a user saw on a website, items they added to cart, name or email address they used on the website, etc.
Source: WPBeginner – for more information on Cookies – click here