Big, global and omnichannel
Our exchange covers all device types and formats at scale. Quality at every step. That’s why the world’s largest publishers, marketers, and DSPs confidently partner with us.
Benefits of Our Exchange »Activate Your Audiences Across the Open Web. Seamlessly.
Dynamic technology, premium quality, and huge scale make us the world's leading sell-side platform for audience, data, and identity targeting across CTV, app, and web environments.
OpenX has been on an ongoing mission to reduce our environmental impact and is the first company in the advertising, technology, and media sectors to become verified as Net-Zero. OpenX was also the first adTech platform to go carbon neutral and achieve CarbonNeutral® company certification from Natural Capital Partners. Learn more.
Find your perfect audience
Bring your own first-party data, or leverage our third-party data. Either way, we’ll identify, reach, and help you engage your audiences across every supply channel.
Explore the benefits of OpenAudience™ »
DSPs: we’ve got what you need
Have a look at what we offer, what we support, and how we can be in lockstep with you — so our mutual customers don’t make any missteps.
OpenRTB API Specification » OpenX Ad Exchange Demand Policy » OpenX Integration Plan »
OpenX is the only 100% cloud-based exchange, giving us the most efficient tech stack in the industry.
"Working with a partner like OpenX, who can offer access to a unique data asset of anonymous user information across the open web, has expanded our ability to apply a sophisticated and audience-focused approach to campaigns regardless of channel, which, in turn, allows us to deliver better results for our clients."
Sean Muzzy, President North America at Matterkind
"OpenX is democratizing identity across all publishers on the open web, helping marketers to plan and buy audiences the way they do inside walled gardens."
Travis Clinger, SVP, Addressability and Ecosystem at LiveRamp
"Condé Nast has benefited from OpenX’s expertise and experience to better understand how to implement programmatic within its existing technology stack. We found the implementation of the OpenX Bidder to be efficient and effortless and the results very rewarding."
Malcolm Attwells, VP Revenue Strategy Europe at Condé Nast
