AppNexus is a New York City-based company that provides a platform specializing in real-time online advertising. As of 2014, AppNexus servers process 45 billion ad buys per day; AppNexus handled an estimated $700 million in ad spending in 2012, giving it the biggest reach on the open web after Google.

AppNexus offers online auction infrastructure and technology for data management, optimization, financial clearing and support for directly negotiated advertising campaigns. It integrates with advertising sources including Google's DoubleClick, Microsoft's AdECN, and aggregators. It operates out of multiple data centers, including one in Amsterdam serving Europe and the Middle East, in a facility shared with Equinix.

Supported brand formats

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300x250 HTML5, 3D Box, Horizontal Axis RTB
3D Box LeaderRTB
980x120 HTML5, 3D Box, On Click RTB
970x250 → 970x750 HTML5, Cascade, On Click, Video RTB
300x250 → 500x350 HTML5, 3D Box, Horizontal Axis RTB
760x600 HTML5, Floating, Video RTB
IAB BillboardRTB
970x31 → 970x250 HTML5, IAB, On Click, Video RTB
IAB FilmstripRTB
300x600 HTML5, Filmstrip, Video RTB
IAB PushdownRTB
970x90 → 970x415 HTML5, IAB, On Click, Pushdown, Video RTB
IAB SidekickRTB
300x250 → 1000x850 HTML5, Autoplay, On Click, Sidekick, Video RTB
950x90 → 950x460 HTML5, IAB, On Click, Slider, Video RTB
640x480 HTML5, Autoplay, In-Stream, Pre-Roll, VAST, Video RTB
480x400 HTML5, Inview RTB
300x250 Call, Dynamic Content, Gyro Shake, Gyro Tilt, Out-Stream, Product Explorer, Slider, Store Locator, Video RTB
Roll for VideoRTB
300x250 HTML5, Countdown, On Rollover, Video RTB

Creative Examples

Samsung - Washing Machine

Creative agency: Adform Production

Media agency: Starcom