First-party data

First-party data arises from a business's own direct interactions with customers or users, such as purchases or contacts through its shop. The classification concerns origin and relationship, not file format or whether a cookie is technically first-party.[1]

Purchase history may support relevant service, but the first-party label does not grant unrestricted usage rights. Track purpose, lawful basis and retention separately. Information stored in an externally operated system can still originate in your customer relationship; storage location and provenance are different characteristics.