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There are three types of data: first-party data, second-party data, and third-party data.

What is Third-Party Data?

Third-party data is any data source that you access through an intermediary. These data
aggregators collect personal data from a variety of sources, segment it based on
demographics, psychographics, and other key points, and then sell those segments
commercially. There also doesn’t have to be a paid relationship, so third-party data
also includes any sources that you receive from an intermediary, regardless of the
commercial arrangement.

What is First-Party Data? 

What is Second-Party Data? 

Diagram 1st to 3rd party data-Cendyn

Image Source: https://www.cendyn.com/library/why-you-should-be-focusing-on-first-party-data/

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