Cookies can generally be classified into 3 different ways: their origin, duration, and purpose:

 

Origin:

• First-party cookies: These cookies are put on your device directly by the website you are visiting.

• Third-party cookies: These are the cookies that are placed on your device, not by the website you are visiting, but by a third party like an advertiser or an analytic system

Duration:

• Session (transient) cookies: These cookies are erased when site visitors close their browsers and are not used to collect information from their computers. They typically store information in the form of a session identification that does not personally identify the user.

• Persistent (permanent or stored) cookies: These cookies are stored on a site visitor's hard drive until they expire (at a set expiration date) or until they are deleted. These cookies are used to collect identifying information about the user, such as web surfing behaviour or user preferences for a specific site.

Purpose:

• Strictly necessary cookies: These are the cookies that let your visitors browse through your site. They are also necessary for security reasons. 

• Functional cookies: Also known as “preferences cookies”, these cookies "remember" choices that you have made in the past. 

• Statistics cookies — Also known as “performance cookies,” these cookies collect information about how you use a website, such as which pages you visited and which links you clicked on. None of this information can be used to identify you. It is all aggregated and, therefore, anonymized. Their sole purpose is to improve website functions. This includes cookies from third-party analytics services as long as the cookies are for the exclusive use of the owner of the website visited.

• Marketing cookies — These cookies track your online activity to help advertisers deliver more relevant advertising or to limit how many times you see an ad. These cookies can share that information with other organizations or advertisers. These are persistent cookies.