Amazon Publisher Services expanded Signal IQ, a bidstream testing tool, to evaluate how signals within OpenRTB requests influence advertiser demand and publisher revenue. The update moves beyond assessing alternative audience ID signals intended to replace third-party cookies and instead incorporates broader bidstream data tied to ad impressions. Included signals cover global placement IDs, transaction IDs, and video classification parameters. The strongest impact comes from signals that improve bidder confidence, including contextual signals related to device characteristics or streaming TV content genre. APS also added AI-powered optimization tools, expanded Shopping Insights commerce deals, and introduced outcome-based planning tied to advertiser consideration metrics. The approach emphasizes that publishers often lack visibility into which bidstream signals buyers value and how different bidders respond to different signals.
"The biggest impact comes from signals that improve bidder confidence, and we've found that extends way beyond ID signals. Some of the signals we see 'pop' are contextual, specific to the device or even the genre of streaming TV content."
"What Signal IQ shows us is that different bidders respond differently to different signals. A signal that drives significant lift with one bidder may have minimal impact with another, because each bidder has its own models a"
"The Signal IQ expansion pushes APS beyond evaluating the impact of alternative audience ID signals like LiveRamp's RampID or The Trade Desk's UID2 that are meant to replace third-party cookies. It now weighs broader bidstream data about the ad impressions themselves, including global placement IDs (GPIDs), transaction IDs and video classification parameters."
"What signals really matter APS argues publishers still lack visibility into which bidstream signals actually influence DSP bidding behavior. Many publishers continue investing in identity tools and supply-path optimization strategies without clear insight into whether buyers actually value those signals and factor them into their bidding decisions."
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