SAN FRANCISCO, CA — Five months after MediaMath launched a new platform aimed at reconstituting commonly-held digital ad trading practices, the technology vendor says it continues to hold talks with more potential partners. In October, MediaMath launched a new initiative, Source, that makes several promises all at once, including: 100% “accountability” by the end of 2020, … Continue reading Re-Think Ad Supply From The Source: MediaMath’s Steinberg