What is Zero-Party Data?

Zero-Party Data is information a customer intentionally and proactively shares with a brand, such as preferences, intentions, sizes, gifting context or values. Unlike first-party data, which is observed, Zero-Party Data is declared. In a composable storefront it becomes a high-trust input for the decision engine and a clean foundation for cookieless personalization.

Definition

Zero-Party Data is collected through deliberate touchpoints: preference centers, quizzes, configurators, post-purchase surveys, wishlists with semantic tags or onboarding flows that ask for explicit intent. The data is captured by the storefront, written through the storefront API into the customer data platform and attached to the identity graph. Because the customer knowingly provided it under a clear consent state, the consent-bound classification is unambiguous, which matters as third-party signals continue to erode. The decision engine treats Zero-Party Data as a strong feature in segmentation, propensity modeling and next best offer selection.

Why it matters

Observed behavior tells you what someone clicked; declared data tells you why. That distinction sharpens personalization in ways behavioral targeting alone cannot, especially on cold sessions where no behavioral history exists yet. Zero-Party Data also reduces dependency on third-party cookies and bridges the gap between identity resolution and intent. For composable storefronts the data is just another feed into the CDP, consumed by the experience layer at the edge, so it slots into the existing decoupled architecture without bespoke pipelines.

Use cases

A beauty retailer runs a short skin-type quiz that updates the CDP profile, which then drives recommendation engine rankings and email marketing flows in lockstep. A fashion brand uses a fit configurator whose answers shape size defaults and dynamic content in size guides. A B2C electronics merchant offers a gift-finder whose declared budget and recipient feed cohort targeting for the rest of the journey. A subscription service asks new customers their delivery cadence preference and uses the answer in next best offer logic, lifting LTV without ever guessing.

Related

Explore Personalization · Composable Digital Experience Platform.