U.S. Court Rules Google Illegally Dominated Ad Tech Market

The U.S. District Court held that Google unlawfully acquired and maintained monopoly power in the publisher ad server and ad exchange markets, violating Sections 1 and 2 of the Sherman Act.

Google tied its ad server (DFP) with its ad exchange (AdX), restricting competition and harming publishers and consumers. However, the court dismissed claims regarding advertiser ad networks, citing insufficient evidence.

The decision permits the U.S. Department of Justice to pursue structural remedies, including potential divestiture of parts of Google's ad tech business.

Google plans to appeal the decision, arguing its tools help both publishers and advertisers.