The next phase of programmatic is here. Learn how agentic sell-side decisioning brings intelligence to the impression, reshaping performance on the open internet.
Read moreIndex Marketplaces for Media Buyers
Activate smarter supply paths with precision targeting, premium inventory, and built-in transparency. Index Marketplaces helps you reduce waste and improve working media to shape better outcomes from the very start of the auction.
Activate smarter supply paths with precision targeting, premium inventory, and built-in transparency. Index Marketplaces helps you reduce waste and improve working media to shape better outcomes from the very start of the auction.
Unlock more efficient, more transparent buying
Unlock more efficient, more transparent buying
More budget flexibility to shape outcomes
Make every dollar work harder without added platform fees that increase working media and reduce unnecessary platform costs.
Stronger signals to prove performance
Use sell-side intelligence to reduce waste, improve suitability, and clearly demonstrate how transparent supply paths drive results.
Work seamlessly with partners
Activate solutions from data, measurement, and curation partners directly in your workflow to build smarter, more efficient paths to performance.
Purpose-built for media buyers
Create smarter deal packages
Build high-quality Marketplace packages using premium supply and multi-dimensional targeting that aligns to your KPIs.
Make earlier, more informed decisions
Apply sell-side intelligence before bids are sent to reduce waste and improve efficiency.
Accelerate time to market
Move from planning to activation quickly with intuitive deal creation, fast forecasting, and instant DSP compatibility.
Gain full transparency into performance
See how supply decisions shape delivery, cost, and outcomes with clear reporting into deal activity and top value drivers.
Built with the industry, for the industry
Our partnerships with leading data, measurement, and algorithmic experts help you activate richer signals, improve accuracy, and uncover new paths to performance—all within a transparent supply framework.
Hear from Marketplace partners
“Index Marketplaces effectively allows us to move into this new era where every consumer is addressable, every signal can be used to drive outcomes, and we can deliver performance on the open internet that rivals walled gardens.”
– Joe Root
Co-founder and CEO of Permutive
“With Index Marketplaces, we’re not just accessing better supply—we’re making smarter decisions earlier in the process. Sell-side decisioning allows us to shape outcomes more proactively, delivering consistent results our clients can trust.”
– Britany Scott
VP of Growth, Smart Supply by AI Digital
“What used to feel complicated, for example, combining different datasets or timing campaigns to real-world conditions, now happens automatically with sell-side decisioning.”
– Dave Olesnevich
VP of Weather Data and Advertising Products at The Weather Company
“By leveraging intelligent curation, we’re not only reducing waste but also setting a new standard for programmatic efficiency. This partnership exemplifies how industry leaders can come together to push the boundaries of what’s possible, ensuring long-term value for brands, publishers, and media buyers alike.”
– Ryan Lammela
Group Director, Channel Activation, Butler/Till
CASE STUDY
How Smart Supply by AI Digital Improved Video KPIs by 19% via Index Marketplaces
Learn how Index Marketplaces and sell-side decisioning helped Smart Supply deliver impressive video performance, driving efficiency and long-term value.
Learn moreCASE STUDY
How SWYM.ai Leveraged Index Marketplaces To Deliver 56% Boost in Client KPIs for Butler/Till
Leveraging Index Marketplaces, SWYM.ai was able to train their algorithm on performance signals across the entire transaction—including sell-side signals from Index’s robust, high-quality supply.
Learn moreAn Award-Winning Platform
AdExchanger Best Sell-Side Focused Technology
Frost & Sullivan’s Global New Product Innovation Recognition
Learn more about Index Marketplaces and become a partner today
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