Nederlands 
English What is first-party attribution?
First-party attribution measures your marketing results with data you own yourself. It keeps working as third-party cookies disappear, but it does have a blind spot.
First-party attribution is the assignment of conversions to marketing channels based on data the organisation collects itself, such as server-side tracking and its own customer data, without dependence on third-party cookies.
How first-party attribution works
First-party attribution is built on data you manage yourself. Think of server-side tracking, login data, your CRM and your e-commerce platform. A visitor is identified via a first-party identifier, not via a cookie from an ad network.
Because the data is yours, the measurement holds up when browsers block third-party cookies. You are not dependent on what an advertising platform shows you.
For short-term campaigns this is valuable. You can quickly see which campaign drove which conversions in your own systems, with data you can verify.
What first-party attribution can and cannot do
First-party attribution is strong in the short term and weak on everything outside your own measurement.
Works without third-party cookies
The measurement runs on your own data and remains reliable as cookie tracking disappears.
Rapid campaign feedback
You can see within days which digital campaign drove which conversions in your systems.
Blind spot for offline
TV and radio leave no click. First-party attribution does not measure their contribution.
Limited view of long-term effects
Branding and carry-over effects are underestimated because there is no direct data point.
First-party attribution plus Marketing Mix Modeling
First-party attribution and Marketing Mix Modeling cover each other's weak spots. First-party delivers rapid, channel-specific signals. MMM delivers the long-term picture across all channels, including offline.
Datafy uses both within a shared model. This gives you daily campaign feedback alongside a complete cross-media picture.
Frequently asked questions
What is the difference between first-party and third-party attribution?
Third-party attribution relies on cookies and data from external networks. First-party attribution uses only data you own yourself. That data remains available as third-party cookies disappear.
Does first-party attribution measure offline media?
No. Offline channels such as TV and radio leave no measurable click or identifier. Their contribution becomes visible through Marketing Mix Modeling, not through first-party attribution.
Is first-party attribution more privacy-friendly?
Yes, when set up correctly. You work with data the customer has provided to you and with server-side tracking, rather than with tracking by external networks. Make sure you have a valid legal basis and are transparent about it.
Do I still need Marketing Mix Modeling then?
For a complete picture, yes. First-party attribution misses offline channels and underestimates long-term effects. MMM fills precisely that gap.
Your own data, a complete picture.
Book a demo and see how Datafy combines first-party attribution with Marketing Mix Modeling.