What is Zero and First Party Data?

Zero-party data is information that a customer intentionally and proactively shares with a brand, such as preference-centre selections, survey responses, quiz results, and communication-channel choices. It is explicitly volunteered rather than inferred from behaviour. 

 

First-party data, by contrast, is collected through observed interactions on a brand’s owned channels: website visits, app usage, purchase history, and email engagement. Both data types are high-quality and privacy-friendly because they originate from a direct relationship, but zero-party data carries an extra layer of trust because the customer actively chose to provide it.

How to Collect and Use Each Type

Collect zero-party data by creating value-driven exchange moments: interactive quizzes that recommend products, preference centres that customise email content, and feedback forms that shape future offerings. 

 

Collect first-party data through analytics platforms, CRM integrations, and server-side event tracking. Use zero-party data for hyper-personalisation, tailoring content and offers to stated preferences, and first-party data for behavioural segmentation, retargeting, and predictive modelling. 

 

Combining both types creates a comprehensive customer profile that is far more actionable than either alone.

Securing Both Data Types with Seers

Even voluntarily shared zero-party data requires a transparent legal framework. Seers’ CMP ensures that the collection mechanism, whether a preference centre, survey, or quiz, is accompanied by clear privacy disclosures and recorded consent. 

 

For first-party behavioural data, Seers.ai gates analytics and marketing scripts behind consent, integrates with Google Consent Mode v2 for measurement continuity, and uses server-side tagging to capture events reliably. 

 

The result is a unified consent record that covers both zero-party and first-party data, simplifying audits and strengthening your compliance posture across all data types.

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