As browsers increasingly restrict third-party cookies and data privacy regulations tighten, brands are reshaping their marketing strategies. At the center of this shift is first-party data.
In this article we cover what first-party data is, why it has become so important, how it is collected and how it is used in marketing.
What Is First-Party Data?
First-party data is information a brand collects directly and with the user’s permission through its own channels (website, mobile app, email list, CRM system, points of sale). It can include contact details, purchase history, on-site behavior and preferences.
It is easiest to understand by comparing it with three data types:
- First-party data: Data the brand collected itself.
- Second-party data: Another brand’s first-party data, shared through a partnership.
- Third-party data: Data compiled from various sources by data collection companies and sold.
Why Has First-Party Data Gained Importance?
- Restrictions on third-party cookies: Major browsers, starting with Google Chrome, are gradually limiting support for third-party cookies.
- Data privacy regulations: Rules such as GDPR (Europe) and KVKK (Türkiye) set strict conditions for collecting and using user data.
- Growing importance of user trust: Consumers have become more aware and demand transparency about how their data is used.
- Higher data quality: Because first-party data comes directly from the user, it is generally considered more accurate and current than third-party data.
How Is First-Party Data Collected?
The main methods brands can use:
- Email newsletter subscriptions: Lists that users subscribe to voluntarily are a valuable source.
- Membership and account creation: Users who create accounts on a website or app provide preference and behavior data.
- Loyalty programs: Points or reward systems give detailed data about purchase habits.
- Surveys and forms: Feedback collected directly from users helps in understanding preferences.
- Website and app analytics: Consent-based analytics tools provide on-site behavior data.
- CRM systems: Data from sales and customer service processes is at the center of a first-party data strategy.
For how email marketing relates to data collection, see our article what is email marketing.
How Is First-Party Data Used in Marketing?
- Personalized content and offers: Content or campaigns tailored to a user’s past behavior.
- Audience segmentation: Dividing users into segments by interest, purchase frequency or value.
- Creating lookalike audiences: Targeting new audiences similar to existing valuable customers on ad platforms.
- Increasing customer lifetime value (CLV): Personalization supported by the right data can support loyalty and repeat purchases.
For personalized marketing strategies, see our article on marketing automation.
Privacy and Trust in First-Party Data
For a first-party data strategy to be sustainable, transparency and user trust are critical. Key points for brands:
- Use clear and understandable consent processes: Users should know exactly what data they share and for what purpose.
- Invest in data security: Storing collected data securely is both a legal and ethical obligation.
- Collect data in exchange for value: Users are more willing to share data in return for something concrete, such as a personalized experience or special benefits.
- Keep privacy policies up to date: This matters both for legal compliance and for trust signals within the E-E-A-T framework.
We explained how cookie consent affects GA4 data and how to estimate the missing data in why GA4 data is incomplete when there is cookie consent.
Frequently Asked Questions
What is the main difference between first-party and third-party data?
First-party data is collected by the brand directly through its own channels with the user’s permission. Third-party data is compiled by data companies from various sources and sold, and usually has no direct relationship with the user.
Are third-party cookies going away completely?
Major browsers are gradually restricting third-party cookie support; this is one of the main factors pushing the market toward first-party data strategies.
Can small businesses build a first-party data strategy?
Yes. Low-cost methods such as an email newsletter, a simple membership system or surveys let small businesses start collecting first-party data.
Must first-party data be collected in compliance with KVKK?
Yes. Brands operating in Türkiye must comply with the requirements of KVKK (the Personal Data Protection Law) when collecting first-party data; explicit consent and transparent information are the basis of that compliance.
How does first-party data affect ad performance?
Properly collected and segmented first-party data can improve targeting accuracy and raise the efficiency of ad spend (ROAS).
Conclusion
In the new era shaped by cookie restrictions and data privacy regulations, first-party data has moved to the center of brands’ marketing strategies. A transparent, user-focused approach to data collection both ensures legal compliance and opens the door to more effective, personalized marketing experiences.
To strengthen your data-driven marketing strategy, you can use our digital marketing service.
