Compliance & regulatory
CMP (consent management platform)
User-consent UI and storage for GDPR/CCPA/LGPD compliance.
A CMP (consent management platform) is the cookie-banner-and-storage layer that captures, stores, and signals user consent for tracking. Required by GDPR, CCPA, LGPD. Major CMPs: OneTrust, TrustArc, Cookiebot, CookieYes, Klaro (open-source), Didomi. CMPs implement IAB's TCF (Transparency and Consent Framework) v2.2 to signal consent downstream to ad-tech vendors. Modern affiliate sites all have a CMP.
Example
Affiliate review site adds Cookiebot CMP in Q2 2024 to comply with EU and California traffic — opt-in rate 64%, downstream Meta CAPI fires only on consenting users — drops measured conversion volume 36% but cleans the data of non-compliant signals.