·2 min
First-party data — your own company data
marketinganalyticsprivacy
What is first-party data?
First-party data is data you collect directly from your users and customers — through your website, app, CRM, forms, surveys, or loyalty program. Unlike third-party data (data from external sources/cookies), first-party data belongs to you and is collected with user consent.
Types of data
| Type | Source | Example |
|---|---|---|
| Behavioral | Website/app | Pages visited, time on site, clicks |
| Declarative | Forms, surveys | Email, job title, industry, preferences |
| Transactional | Purchases, subscriptions | Purchase history, LTV, MRR |
| CRM | Sales team | Meeting notes, lead status, lead scoring |
Why does it matter?
- End of third-party cookies — browsers block cross-domain tracking; first-party data is the only unendangered source
- Accuracy — owned data is the most accurate because it comes directly from the user
- Personalization — you can tailor content, offers, and communication based on actual behavior
- Remarketing — first-party audiences in Google Ads and Meta Ads deliver higher ROAS than third-party audiences
How to collect first-party data?
- Lead magnets — ebooks, calculators, webinars in exchange for contact details
- Newsletter — systematic email list building
- GA4 + GTM — tracking behavior on the site (with consent mode)
- CRM — a central place for data from all touchpoints
- Surveys and quizzes — interactive content that collects preferences
- Server-side tracking — browser-independent, more reliable
First-party vs zero-party data
- First-party — observed data (what the user does)
- Zero-party — declared data (what the user says about themselves: preferences, purchase intent)
Both types are yours and GDPR-compliant, provided they are collected with consent.
Related terms
- GA4 — Google Analytics 4
- GTM — Google Tag Manager
- Server-side tracking — server-side tracking
- Remarketing — user retargeting
- Attribution model — conversion attribution model