Mobile variety is in short supply for marketers. With the duopoly maintaining near-total dominance, alternative ad-tech players struggle to break through. This means media buying is often limited to Google or Facebook. The most viable contender thus far has been Amazon, a potential third titan in the making. But another challenge is emerging that may… https://www.adweek.com/programmatic/how-shifting-media-buy-away-from-google-and-facebook-can-lead-to-more-diversity-in-ad-tech/