Yahoo DSP Launches Conversion API to Enhance Campaign Measurement and Optimization

New York, NY – April 28, 2025 – Yahoo DSP today announced the launch of its Conversion API (Yahoo CAPI), a future-proof solution designed to help advertisers streamline measurement, attribution, and optimization across channels. Yahoo CAPI allows advertisers to send conversion events directly to Yahoo DSP in real-time through a centralized and simplified integration, ensuring more accurate campaign performance insights. At the core of this solution is Yahoo ConnectID, which provides addressability through its 232 million logged-in users in the U.S.

Yahoo CAPI is redefining measurement and attribution for commerce media networks by unifying online and offline conversion tracking in a single, streamlined workflow. Unlike most platforms that require separate setups, Yahoo DSP empowers advertisers to optimize campaigns down to the product level with real-time insights, regardless of whether the conversions happened in-store or through a website or app. With Yahoo CAPI, we saw a 30-50% increase in attributed conversions for Commerce Media.

Advertisers can analyze conversion data through direct integration with Yahoo CAPI or via LiveRamp’s data collaboration platform, Yahoo CAPI’s initial integration partner - with more to come. This enables seamless connection between offline conversions and online campaign exposures in Yahoo DSP.

“Through this solution, advertisers can easily upload their LiveRamp offline conversions on Yahoo DSP and close the loop on measurement, gaining a clearer understanding of how our online advertising efforts are driving offline sales,” said Travis Clinger, Chief Connectivity & Ecosystem Officer at LiveRamp. “Amidst increasing pressures on advertisers’ budgets, using a CAPI enables increased campaign effectiveness - and better insights into returns - helping advertisers to make the best use of their investments and to highlight the critical role they play.”

"Yahoo DSP is committed to helping advertisers navigate the evolving digital landscape with solutions that prioritize both accuracy and privacy," said Giovanni Gardelli, VP of ads data products at Yahoo. "With the launch of Yahoo CAPI, advertisers gain more control and flexibility in how they share conversion data, ensuring optimal measurement and performance. For example, with Yahoo CAPI, a technology advertiser saw 3x more attributed  conversions across different channels and devices that would have been harder to measure due to lack of cookies or advertising IDs."

Key Features and Benefits of Yahoo CAPI:

• Easy Integration – A single integration point for advertisers to send all conversion data, including website, app, and offline sales, to Yahoo DSP.
• Greater Choice & Control – Advertisers can transmit data directly using first-party identifiers or through their preferred partners such as LiveRamp's integration for offline conversion.
• Future-Proof & Privacy-Centric – Powered by Yahoo ConnectID, this solution is privacy-safe, ensuring security and compliance. 
• Optimized Measurement & Attribution for Commerce Media – Yahoo CAPI powers offline and online conversion tracking, allowing advertisers to auto-optimize down to the product level in Yahoo DSP.

For more information, visit https://www.yahooinc.com/blog/measure-more-miss-less-meet-yahoo-conversion-api. 

About Yahoo 

For 30 years and counting, Yahoo has served as a trusted guide for hundreds of millions of people globally, helping them achieve their goals big and small online through our portfolio of iconic products. For advertisers, Yahoo offers omnichannel solutions and powerful data to engage with our brands and deliver results.

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¹ Yahoo Internal data 2025
² Yahoo Internal data 2025
³ Yahoo Internal data 2024