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.

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 »

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™ »
Google Cloud

OpenX is the only 100% cloud-based exchange, giving us the most efficient tech stack in the industry.

Audience creation. Optimization. Bid guidance. Tell us what you’re working toward, and we’ll do the heavy lifting.