9 October 2023
Last modified: 15 March, 2022
Third-party data is data that is aggregated and packaged by a third party and sold to companies. The third party has no direct relationship with the data subject and is not the original collector; it collates data from various sources including via third-party cookies. Collated and stored on a centralised system such as a data management platform (DMP), the data is categorised based on key characteristics – for example, demographics, interests, behaviours – allowing the companies that purchase the data to target specific segments.