Index Marketplaces: Smarter Supply. Better Outcomes.

Bring intelligence, optimization, and measurement directly to the sell side with Index Marketplaces. Activate premium data and precision targeting capabilities across the entire open internet to create high-performing deal packages—all without any added platform fees.

Learn how it works
index-marketplaces-header-1920x1080

Bring intelligence, optimization, and measurement directly to the sell side with Index Marketplaces. Activate premium data and precision targeting capabilities across the entire open internet to create high-performing deal packages—all without any added platform fees.

Activate sell-side decisioning with Index Marketplaces

Activate sell-side decisioning with Index Marketplaces

Icon for optimization

Optimize bids before they reach the buy side

Maximize the value of every impression with precision targeting at internet scale.

Icon for speed

Reduce inefficiencies with faster decisions

Apply intelligence in the opening milliseconds of the auction to achieve greater scale and performance.

Icon for connections

Connect with partners to further programmatic innovation

Up-level deal performance by seamlessly partnering with industry leaders in algorithmic decisioning, curation, premium data, and more.

Illustration of multiple media formats

Earn more from every impression

Unlock more demand without added fees or extra work, while maintaining control of your inventory and data.

Illustration of data driven results

Better outcomes, less waste

Maximize your working media and optimize performance by minimizing waste and eliminating unnecessary fees.

Illustration of servers and computer

Drive innovation without complexity

Layer your data, algorithms, or programmatic expertise onto Index’s infrastructure to quickly scale innovation and deliver more value to the market.

Data vendors can easily onboard into the Data Vendor Ecosystem to make your segments seamlessly available in Marketplaces without custom integrations or added fees.

Why build an Index Marketplace?

Plug-and-play setup

For rapid configuration with no engineering required

Easy deal creation and packaging

Powered by your own data and rules

Real-time dashboards and audit logs

For performance tracking and visibility

Total transparency

Into performance drivers and buyer behaviors

Instant, scaled access

To premium audience and contextual segments from our trusted Data Vendor Ecosystem partners

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 more

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 more

Best Sell-Side Focused Technology

2025 AdExchanger Awards

2025 AdExchanger Award Winner

Learn more about Index Marketplaces and become a partner today

Latest from the blog

All Articles

See how the Guardian boosted revenue by 4% and impressions served by 45% with Index Exchange’s Transparent Dynamic Take Rates, driving transparency and efficiency.

Read more

The shift to first-price auctions intended to simplify programmatic advertising auctions and increase transparency. In theory, this should have created …

Read more

Marketers today expect more from programmatic: addressable reach, measurable outcomes, and smarter use of every media dollar. To meet this …

Read more