Allows users to navigate the website and use its features, such as accessing secure areas of the website.

Used to deliver advertising that is relevant to users and their interests. Also used to limit the number of times an advertisement is displayed as well as help measure the effectiveness of an advertising campaign. Usually placed by advertising networks with the website owner's permission.

Allows the website to remember user choices (such as username, language, or region) and provides enhanced more, personalized features.

Provides information about how a website performs, how each page renders, and whether there are technical issues on the website to the site owner. This storage type generally doesn't collect information that identifies a visitor.