5 September 2023
Last modified: 14 March, 2022
Using a variety of approaches such as panel-based research, registration, device counting, or first- and third-party cookies, audience measurement counts how many people are being reached by online content and collects data on those viewers and their interactions with the content. Audience measurement is used by advertisers to inform buying decisions and to validate delivery of campaigns to the requested audience, and by publishers to demonstrate their platform’s reach. Third-party companies offering audience measurement systems include Nielsen and Meetrics.