Zefr is helping power the age of responsible marketing by enabling transparent, content level media buying and measurement across brands, agencies and platforms.

Zefr’s Patented Human-in-the-Loop approach was architected for video platforms, reducing false positives and increasing precision. Align with GARM / 4A’s industry standards for pre-flight targeting or post-campaign verification, with additional brand exclusions available. Zefr eliminates ~30%+ of misaligned impressions from false positives and unsuitable content.