First-Party Data

What is First-Party Data?

First-party data is collected directly by you, with the user's consent, through your own properties. It contrasts with second-party (shared by a partner) and third-party (purchased from a broker who collected it elsewhere). Two changes have made first-party data the most valuable class: regulation has restricted what third-party data can do, and the death of the third-party cookie has restricted how it can be used. First-party data is opt-in by definition, gives a complete picture of behavior on your properties, and survives every privacy regulation by default. The teams that win in 2026 are the ones with the deepest first-party data on their actual customers, used to drive every downstream play.

Why it matters

• Survives every privacy regulation by default — first-party is opt-in, consented, and yours.
• More accurate than purchased data — you saw the behavior firsthand.
• Compounds over time — every interaction adds to the customer's first-party profile.

Use cases

• Product-led signals. Usage events that drive PQL scoring and expansion outreach.
• Engagement profile. Site behavior tied to known contacts that fuels lifecycle marketing.
• Support-driven insight. Tickets and conversations as the highest-fidelity intent signal.