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Google avoids breakup of ad-tech business, judge orders compliance officer instead
A federal judge rejected the DOJ's push to force Google to sell off its ad exchange, opting for behavioral remedies and an internal compliance officer after finding the company held illegal monopolies.
The Department of Justice wanted to break up Google’s advertising empire. It didn’t get what it wanted.
US District Judge Leonie Brinkema ruled on September 2 that Google will not be forced to divest its AdX ad exchange or sell off its DoubleClick for Publishers (DFP) ad server, rejecting the structural remedies the DOJ had been pushing for. Instead, the court opted for behavioral fixes and an internal compliance officer to address the antitrust violations it had already confirmed back in April 2025.
Alphabet, Google’s parent company, is currently valued at roughly $4.11 trillion. Its stock barely flinched. Wall Street, it turns out, had been betting on exactly this outcome.
What the DOJ wanted versus what it got
The government’s case was ambitious. Federal prosecutors argued that Google should be compelled to sell its AdX exchange, and that its DFP ad server should either be open-sourced or divested entirely. The logic was straightforward: Google controlled both sides of the digital advertising marketplace and the exchange in the middle, creating what the DOJ characterized as an inescapable chokepoint.
In April 2025, Judge Brinkema found that Google maintained illegal monopolies in two distinct markets: publisher ad servers and ad exchanges. The company held an estimated 90-91% share of the publisher ad server market.
Google’s playbook included what the court described as “first look” and “last look” advantages within auction systems.
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But rather than dismantling the operation, Judge Brinkema chose behavioral remedies. The specific details of those remedies are under seal for 14 days pending redaction, with parties having until September 16 to seek those redactions. What we know is that the fixes focus on changing how Google conducts its ad auctions rather than forcing it to sell off pieces of the business.
Both the DOJ and Google must now submit a joint proposed final judgment by October 2, 2026. If the two sides can’t agree on terms, each will present competing versions for the court to evaluate.
Why behavioral over structural
Breaking up an integrated ad-tech stack is not like splitting a conglomerate that happens to own unrelated businesses. Google’s ad server, exchange, and buying tools are deeply intertwined technically. Separating them cleanly would be an engineering and operational nightmare that could disrupt the broader digital advertising ecosystem, potentially harming the publishers the DOJ was ostensibly trying to protect.
The appointment of an internal compliance officer is meant to address monitoring concerns, though a compliance officer employed inside the company they’re supposed to police faces obvious structural tensions.
What this means for the ad-tech landscape
The company still owns the most widely used ad server, the largest exchange, and the most popular buying tools. Changing how it operates those assets is meaningfully different from forcing it to give them up.
Google’s advertising segment generates hundreds of billions in annual revenue. Analysts have already signaled that they expect continued growth in Google’s ad revenues, viewing the ruling as removing the worst-case scenario from the table.
A forced divestiture would have required the company to sell assets at potentially unfavorable terms while simultaneously rebuilding workflows across its advertising business. That risk is now off the table.