A second-party cookie represents first-party data that is shared directly between two organizations through a trusted partnership or data-sharing agreement. Unlike first-party and third-party cookies, a second-party cookie isn’t stored on a host website or through a third-party. Instead they are data that is transferred from one company to another. Companies that have second-party data acquired first-party data from a trusted partner.
Why would someone want to transfer data to another company? Because companies want as much data as possible to understand their customers and target them in a more personalized and engaging way. Companies can use data to run advertising campaigns and hone in on user preferences. When one company collects data, they can sell it to another in a form of data partnership or through data monetization.
It’s important for users to understand cookies and how they can be shared with other websites besides the one they’re currently visiting. Companies who sell user data need to do so according to legal regulations and consent management requirements. Misuse of customer data or data privacy breaches can lead to decreased brand perception and trust. It is a company’s responsibility to protect their customer data as much as possible and work with second-party companies that are trusted.
Building direct relationships with other companies can help put both parties at a competitive advantage thanks to direct data sharing, without a reliance on purchasing data from third-party vendors or platforms. A customer data platform can help unify this shared data alongside other sources. The more companies know about their users, the better chance they have of converting them into customers.
Benefits of Second-Party Cookies
Obtaining second-party data gives companies insights they wouldn’t typically have about their customers. With this information, they can offer more value tailored to customers’ wants and needs. Second-party cookies can help brands make decisions on ad placement.
For example, if you know your customers read articles about cars, you’ll want to run display ads on car-related websites. If you see that they rarely visit pet websites, you’ll know your ad dollars are better spent elsewhere. Additionally, you can purchase the specific data you need and disregard the rest.
This data sharing can lead to partnership opportunities for the company providing the first-party data and the company purchasing it. For example, if a hotel company sells information to an airline company, they can eventually partner on other marketing campaigns to reach each other’s shared target audiences.
Companies will also have more accurate data which helps create more personalized campaigns. When the right people are seeing your ads, you’ll have a better chance of increasing engagement and conversion. Additionally, acquiring another organization’s first-party data saves time with data cleansing. This first-party data has already been organized and cleansed and is ready to use immediately.
FAQ
What is the difference between first-party, second-party, and third-party cookies?
First-party cookies are created and stored by the website a user is directly visiting, tracking preferences and behavior on that site. Second-party cookies represent first-party data that one organization shares directly with a trusted partner through a data-sharing agreement. Third-party cookies are set by domains other than the one the user is visiting, typically by ad networks or tracking services, and are used to follow users across multiple websites for advertising purposes.
Are second-party cookies affected by cookie deprecation?
Second-party cookies are less affected by browser-based cookie deprecation because they rely on direct data partnerships rather than browser tracking mechanisms. The data exchange happens server-to-server between trusted organizations, bypassing the browser entirely. As third-party cookies are phased out, second-party data partnerships are becoming more valuable because they provide high-quality, consented audience data without depending on cross-site browser tracking. Organizations adopting cookieless tracking strategies increasingly rely on these direct partnerships.
How do companies acquire second-party data?
Companies acquire second-party data through direct partnerships and data-sharing agreements with trusted organizations that have complementary audiences. For example, an airline might partner with a hotel chain to share customer booking data for mutual marketing benefit. These agreements specify what data is shared, how it can be used, and the privacy protections in place, ensuring both parties comply with data privacy regulations like GDPR and CCPA.
Related Terms
- Data Clean Room — Secure environment for sharing and analyzing data between organizations without exposing raw records
- Data Onboarding — The process of transferring offline data to digital platforms for targeting and personalization
- PII (Personally Identifiable Information) — Data elements that can identify an individual, central to second-party data agreements
- Tag Management — Systems for managing tracking code that collects the behavioral data often exchanged in second-party partnerships