First-party interactions refer to user activities that happen directly on the website the user is visiting, such as clicking buttons, making purchases, or filling out forms. These interactions are considered more reliable and less intrusive than data collected by third-party trackers because the website has direct control over the data collection. First-party data is often used for personalized content, marketing, and improving user experiences.

With the growing concern over privacy, businesses are shifting towards first-party data strategies, which are considered more privacy-friendly and comply with increasing privacy regulations, such as GDPR.