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  • 4.8 / 5.0 (1605)
    44+ References
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Zefr Case Studies

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  • DoubleVerify
    Reference Rating
    4.8 / 5.0
    Customer References 44 total
    About

    DoubleVerify is a leading software platform for digital media measurement and analytics. Their mission is to make the digital advertising ecosystem stronger, safer and more secure, thereby preserving the fair …

  • Integral Ad Science
    Reference Rating
    4.8 / 5.0
    Customer References 72 total
    About

    Integral Ad Science is a global leader in digital media quality, ensuring that ads are viewable by real people in safe and suitable environments. IAS makes every impression count, ensuring …

  • OgilvyOne Worldwide
    Reference Rating
    4.7 / 5.0
    Customer References 25 total
    About

    OgilvyOne Worldwide is The Customer Agency for the Connected World. It makes brands more valuable to customers and customers more valuable to brands by combining data and creativity to unlock …

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