Read 1 Zefr reviews and testimonials from customers, explore 5 case studies and customer success stories, and watch customer videos to see why companies chose Zefr as their undefined

Zefr is the leading data and technology company that enables responsible marketing for brands, agencies and platforms. The company leverages a patented AI and machine learning engine, called Cognition AI, to offer brands and agencies more accurate and transparent activation and measurement solutions on scaled video platforms.

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Customer Rating Review Scorebased on 504 reference ratings
4.8/5.0 (504)

1Testimonials

  • “Partnering with TikTok and Zefr was the perfect solution as it allowed us to plan a big impact campaign, whilst monitoring in real-time via Zefr’s daily dashboard update to ensure the safety and suitability of our video ads.”

    Katy AllisonMedia Strategy Manager - Food
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5 Case Studies

  • Rexona Delivers an Impactful Message within a Brand-Safe Environment with Zefr Measurement

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