First party cookies are small pieces of data created and stored on your device by the website you visit. These cookies are important for server side tagging because they collect direct information about user behavior on their own site. They are considered more secure and privacy-friendly because the data remains within the owner’s domain.
Unlike first party cookies, third party cookies are created by domains that are not the website you are visiting. For example, our website might load ‘www.2manydots.nl’ cookies from ‘google-analytics.com’. This is then considered a third-party cookie. These cookies have always been very important for server-side tagging because they collect information about user behavior across different Web sites. These are important for targeted ads and in-depth analysis, but they raise more privacy concerns and are increasingly restricted by new regulations. In fact, starting next year, it is scheduled to be blocked in all browsers.