A cookie is a small amount of information generated when you visit a website and saved by your web browser. Cookies provide a way for websites to remember you, your preferences, and your activity. You might also see cookies referred to as web cookies, internet cookies, browser cookies, or HTTP cookies.
Cookies are used by websites to track your activity and behavior. This isn’t always a bad thing. Cookies have many benefits that help users by tailoring a website experience to the user, providing a better user experience.
Different types of cookies are used to keep track of different kinds of activity. The following are some of the most common types of cookies.
Session cookies (or in-memory cookies) are used when you’re currently using a website. Once you close your web browser, any session cookies are deleted. Because these cookies don’t have an assigned expiration date, your web browser knows it's a session cookie.
Persistent cookies are used for long-term records of multiple visits to a website. These cookies expire at a specific date or after a certain amount of time. From the time your web browser saves the cookie to the time it expires, information is transmitted to the server the each time you visit the website it belongs to.
Third-party cookies are cookies that don’t belong to the domain that’s shown in your address bar. Third-party cookies appear when you visit a website that features an external advertisement. These cookies are often used by advertisers to provide you with more relevant advertisements.
Zombie cookies are cookies that are automatically recreated after they’re deleted. They work by storing the information from the cookie in multiple locations. These types of cookies can be difficult to manage.
Modern web browsers include privacy settings that enable you to block third-party cookies. When you use Google Chrome as your web browser, you can browse in incognito mode so your web browser doesn’t record your browsing history. Cookies created while you’re in incognito mode are deleted every time you close a window that’s in incognito mode.
Web browsers (or “browsers”) are software applications used for accessing and viewing information on the internet.
A server is a computer that provides a service (such as providing data) to other computers and its users, known as the clients.
A user interface (UI) is the point at which humans interact with and control software applications or hardware devices.