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Marketing Glossary· Zero-Party

What is Zero-Party Data?

By Nikhil Sharma · Updated 2 November 2026 · Marketing Glossary
Definition

Zero-Party Data is information a customer intentionally and proactively shares with you — preferences, intentions, interests — given directly, rather than observed or inferred from their behaviour.

What is zero-party data?

Zero-party data is what customers tell you on purpose: their preferences, goals, sizes, interests, how they want to be contacted. Think a preference centre, a quiz, a survey, or a ‘what are you shopping for?’ question. Unlike first-party data (which you observe from behaviour), zero-party data is volunteered.

Why it's so valuable

It’s the most accurate and privacy-safe data there is — freely given, explicitly consented, and about intent rather than guesswork. In a cookieless world, asking people what they want beats trying to infer it, and it powers genuinely relevant personalization without creepiness.

How to collect it

Create a fair value exchange: quizzes and recommenders (‘find your match’), preference centres, onboarding questions, interactive content and polls. Make it quick and clearly worth it, honour what people tell you (personalize accordingly), and store it with proper consent. Done well, zero-party data improves both experience and targeting.

Related terms
First-Party DataPersonalizationCookielessConsent ManagementCDP
NS
Written & reviewed by Nikhil Sharma
Founder, Fabulous Media
Nikhil has led growth for 850+ brands across 35 nations since 2008. Fabulous Media is an invitation-only growth agency that reports on pipeline and revenue, not vanity metrics. Meet the team · Request an invite.

Questions, answered

Zero-party data is information a customer intentionally and proactively shares with you — preferences, intentions, interests — through things like quizzes, surveys and preference centres. Unlike first-party data observed from behaviour, it's volunteered directly.

It's the most accurate and privacy-safe data available — freely given, explicitly consented, and about stated intent rather than inference. In a cookieless world, asking people what they want beats guessing, and it powers relevant personalization without feeling creepy.

Through a fair value exchange: quizzes and product recommenders, preference centres, onboarding questions, interactive content and polls. Keep it quick and clearly worthwhile, honour what people share, and store it with proper consent.

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