Third party data (also spelled 3rd party data, 3P data, or called external data) is another company's first party data you receive through a data aggregator or data reseller (the party you have a contract with).
Because there's an intermediary between you and the data (the second party), it becomes third party to you.
Third party data (also spelled 3rd party data, 3P data, or called external data) is another company's first party data you receive through a data aggregator or data reseller (the party you have a contract with).
Because there's an intermediary between you and the data (the second party), it becomes third party to you.