Mediapost's Tobi Elkin reports on the expansion of DoubleVerify mobile viewability certifications.

"DoubleVerify, an ad-tech firm that authenticates media quality and performance across digital and social platforms, on Thursday said it has expanded its mobile in-app viewability offering to include newly certified partners AOL, xAd, Pocketmath, and Ubermedia. The goal is to offer brand advertisers more transparency into how their digital ads are being viewed across mobile in-app, mobile Web, and desktop platforms.

DoubleVerify said the latest partners were certified for the quality of their mobile measurement technology to ensure accurate performance metrics and to eliminate reporting disparities."

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