Cadreon’s respective auto client used DoubleClick Campaign Manager as its ad server, so it made sense to use its device graph to help draw some of those conclusions. Cadreon first took the siloed approach – it pulled data from individual channels like smartphones, desktop and tablets to build a baseline conversion measurement.
Then it layered in cross-device data for both programmatic and reserved buys, across search and display, which “enabled us to dig down and show that a person who was shown an ad on their smartphone ultimately finished a lower-funnel action on the desktop,” Sailam added.
Initially, Cadreon quantified the impact of mobile as a single-channel. But this didn’t take into account the total cost of conversion, regardless of channel impact.
So using DoubleClick’s cross-device conversion metrics, it ran a series of tests that would help it “fact check” mobile’s real impact. In one instance, Cadreon maintained a fixed budget, meaning it varied the percentage allocated to mobile. In the other instance, the total budget increased with all new spend going to mobile.
Tapping into conversion metrics enabled Cadreon to refine mobile audience segments and determine the impact of mobile or tablet impressions on desktop media. Ultimately, it got a clearer picture on attribution.
“In many cases, we saw data that suggested people were using multiple desktops to complete one action,” Sailam added, “so there was typically a work and home computer used by a single person.”
By optimizing buys based on cross-channel activity (e.g. serving more desktop ads in the after-work hours because a person falls into a segment that prefers to shop and surf online at night) Cadreon's client saw a 15% lift in overall conversions, a 22% increase in conversions when smartphones were a measured touch point in the purchase funnel, and a 13% reduction in eCPA.
Cross device measurement gives clients more of a holistic view into their media spend, claims Sailam.
Although Facebook’s people-based system is arguably more robust right now in terms of its persistent, logged-in user base (Google’s logged-in userset is much smaller, though it applies anonymized data from previously logged-in users to build probabilistic models based on conversion/device type and location), Cadreon’s Johnson said the Facebook Atlas bidder (editor: Atlas is Facebook's cross-device measurement system/ad server) competes with some of its main buying platforms.
And, Sailam has questions about its breadth of measurement cross-channel.
“One of the things that concerns me about Facebook is that their audience is going mobile so quickly that you start to lose some of the cross-device aspect,” he said. “The Facebook graph might indicate users on tablets and smartphones really well, but their presence on desktop isn’t measured so much. Going into next year, Google is talking about different services that will … ensure they’re the largest both in terms of scale but also keeping that logged-in data set very fresh.”