Google keeps its ad empire as judge orders six years of oversight

A US judge has forced Google to share data and open key advertising systems to rivals worldwide — but allowed it to keep the businesses at the centre of the monopoly case.

Google will have to connect its AdX exchange and DFP publisher ad server to rival systems, including the open-source Prebid platform, and pass AdX bids to competing publisher ad servers.¹
Publishers will gain access to data on their own DFP and AdX activity, including winning and losing bids, making it easier to compare providers and switch away from Google.¹
The order blocks Google from favouring its own advertising tools because it owns them, including preferential treatment in AdWords bidding.¹
Google keeps AdX and DFP. Judge Leonie Brinkema rejected the Justice Department’s proposed breakup and instead imposed behavioural rules for six years, with a court monitor and technical committee overseeing compliance.²
The requirements will apply worldwide and take effect 60 days after the final judgment is entered; work to appoint the monitor and technical committee starts immediately.²

The ruling leaves Google in control of the machinery that publishers use to sell advertising, but removes some of the advantages that made its position so difficult to challenge. DFP customers should be able to use Prebid without being funnelled into AdX, while rival exchanges should get access to Google’s bids on comparable terms. The court also required Google to produce technical documentation explaining how DFP’s auction selects winners.²

That is a major change in access, not yet proof of a change in economics. The order does not set advertising prices, cap Google’s fees or guarantee higher publisher revenue. Its test will be whether rival exchanges can turn the newly available data and connections into credible alternatives before the six-year decree expires. Brinkema said the court can extend the term if the judgment has not been fully satisfied.²

The judge’s choice is therefore both a setback and a reprieve for Google. She found that the company had unlawfully acquired and maintained monopolies in publisher ad servers and ad exchanges, and that its tying of DFP and AdX harmed publishers, rivals and consumers of open-web information.² But she concluded that a sale of AdX or the open-sourcing of DFP’s auction logic was “neither realistic nor needed”.²

Google has previously said it would appeal the liability ruling. The Justice Department, meanwhile, says it is still reviewing its options. Until any appeal and final judgment are resolved, the practical question is not whether Google has lost control of ad tech — it has not — but whether court-supervised access can loosen that control fast enough to matter.³

Google keeps its ad empire as judge orders six years of oversight

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