Google Avoids Ad Tech Breakup, Faces New Rules

Alphabet’s Google avoided a breakup of its ad technology business after U.S. District Judge Leonie Brinkema on Sept. 2, 2026 rejected the Department of Justice’s request to force the sale of its AdX exchange. Instead, the court imposed behavioral remedies requiring Google to make its ad tools interoperable with competitors and to end practices that depress publisher ad rates.

Court Rejects Divestiture, Imposes Behavioral Remedies

In a civil antitrust case brought by the DOJ and a coalition of states, Judge Brinkema ruled in the U.S. District Court for the Eastern District of Virginia that Google would not have to divest its AdX exchange or related ad tech assets. The court accepted most of the parties’ proposed behavioral remedies with modifications to address earlier findings of illegal monopolization.

The remedies opinion and detailed terms were filed under seal for about 14 days. A redacted public version is expected later in September, which will clarify technical obligations such as data sharing, auction-logic disclosures, and interoperability standards. The judge directed the DOJ and Google to submit a joint proposed final judgment within 30 days to specify how the remedies will be implemented and enforced.

The court’s order requires Google to make its ad technology interoperable with rival platforms, allowing publishers and advertisers to route inventory and demand to non-Google exchanges and ad servers. It also aims to end practices that lower publisher ad rates, including limits on Google’s use of internal auction data to favor its own exchange.

Background and Outlook

In April 2025, Judge Brinkema found that Google illegally monopolized the markets for publisher ad servers and ad exchanges and unlawfully tied its publisher ad server product to its AdX exchange. The court concluded this harmed publishers and competition.

Following that ruling, the DOJ sought structural relief, including divestiture of Google’s AdX exchange and parts of its publisher ad server business, along with operational fixes such as disclosure or open-sourcing of the auction logic that determines which ads appear on webpages.

Google has indicated it will appeal the liability ruling, keeping the case active on the appellate track even as remedies are implemented at the district court level.

The ruling marks a setback for the DOJ’s push for a structural breakup but confirms that courts can impose operational constraints on dominant digital platforms. Once the final judgment is entered, the DOJ and state attorneys general will monitor compliance through reporting and oversight mechanisms outlined in the public order.

This decision follows a similar pattern in a separate antitrust case over online search, where a court declined to force the sale of a major Google product but imposed behavioral restrictions on its operations. Both cases preserve Google’s corporate structure while requiring changes to specific business practices.