GroupM launched an effort to create new standards for viewability and measurement of advertising that appears on connected television (CTV). The ad-buying giant, a unit of WPP, will have exclusive access to a new software tool that media-measurement firm iSpot.tv is developing to verify that commercials appear on streaming video. The test product, iSpot CTV … Continue reading GroupM Teams With iSpot.tv to Improve CTV Ad Viewability