Is it necessary to remove a pre-existing cookie banner after implementing a CMP?

Is it necessary to remove a pre-existing cookie banner after implementing a CMP?

Policy on Concurrent Banner Usage

No, it is not necessary to keep a "classic" cookie banner once a Consent Management Platform (CMP) is active.

In fact, we strongly recommend removing the old cookie banner. The concurrent operation of both banners can lead to technical conflicts and a negative user experience.

Key Considerations

  1. Technical Conflicts: The presence of two active banners can create interoperability issues, particularly with the PREBID system's ability to correctly detect and process the user's consent signal.

  2. User Experience: Displaying multiple, redundant pop-ups creates an intrusive and confusing experience for the visitor.

  3. Functional Redundancy: A CMP is a more complete and legally compliant tool. While a classic banner may only inform users, a CMP is designed to collect, manage, and process that consent for advertising purposes, thereby making the old banner obsolete.

Recommendation: Our official guidance is to use the CMP as the sole solution and to fully remove any pre-existing cookie banners. This ensures technical stability and the best possible user experience.