by Ryan Joe
During AT&T's earnings call Wednesday, CEO Randall Stephenson noted that 2019 will be "a year of development" for its ad unit Xandr, so the real proof-in-the-pudding will start to show in 2020. But already, Xandr has something to show for itself. As of January, AT&T's first party data is available via Xandr for activation on Turner.
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