First of all, what is a cookie?
Cookies are small files that store your web browsing settings. Almost every site use this technology that will be automatically downloaded by your browser the first time when you visit a website. In the following instances when you access the respective site from the same device, the cookie files and the information retained by it will be returned either to the website that created them (also known as First-Party cookies) or to other sites to which they belong, in case of Third-Party Cookies.
Cookies are very useful, as they visibly improve the user browser experience when they return to a site they have visited several times before, under the sole condition that they use the same platform (browser / device). For instance, the cookies will remember how you use a specific page on the site or how to adjust the most relevant informations to your needs.
Therefore, cookies are divided into several types or categories, depending on their destination or purpose: essential, performance, functional, marketing and statistic cookies.
Performance cookies collect information about navigation and use on the site – such as the most visited pages or if there have been error messages on a specific page. These cookies do not store information that can identify the user and are exclusively used to improve the performance of the website and, ultimately, the user experience.
Functional cookies are used to enable the features required, such as video playback. They can also collect anonymous information and cannot track your movements on other websites.
Marketing cookies help display user-relevant ads, especially tailored to their interests. These cookies are also used to limit the frequency of an ad and to accurately measure the effectiveness of ad campaigns. The cookies used for improved targeting and advertising are often connected to the functionalities of third-party sites.