What is cookieless advertising?
Cookieless advertising delivers personalized, measurable campaigns without using third-party cookies. Safari and Firefox have blocked third-party cookies since 2020. Chrome's Privacy Sandbox and ongoing restrictions extend cookieless reality to the majority of global traffic.
Cookieless techniques
- Contextual targeting: semantic page analysis with LLMs
- First-party data: publisher login graphs, CRM activation
- Persona / cohort targeting: AI-modeled intent groups
- SDA (Seller Defined Audiences): publisher-declared segments
- Privacy Sandbox APIs: Topics, Protected Audience
C Wire is a fully cookieless agentic platform — every campaign runs on contextual + persona signals, with zero reliance on third-party cookies.