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First-party data
First-party data is information a business collects directly from its own customers and visitors, with their knowledge, through its website, app, forms, purchases, email replies and support. It differs from second-party data, which a partner shares, and third-party data, which a seller collects and sells.
Updated 9 Nov 2026
In short
It matters because it is accurate about your own customers and does not depend on another company's tracking. Typical examples are purchase history, newsletter sign-ups, form answers and the pages a logged-in customer views. Collect only what you need, say why, and respect the privacy and consent laws that apply.