Canada's Competition Bureau has filed a lawsuit against Google, accusing the company of engaging in anticompetitive practices in the online advertising industry.

The bureau alleges that Google unlawfully integrated its ad tech services to maintain its dominant market position, which it estimates to be 90% in publisher ad servers, 70% in advertiser networks, 60% in demand-side platforms, and 50% in ad exchanges.

The Competition Bureau is seeking a tribunal order for Google to divest its publisher ad server, DoubleClick for Publishers, and its ad exchange, AdX.

This legal action demonstrates the government's commitment to addressing competition concerns in the digital advertising landscape.

Google has expressed its intention to defend itself against these allegations as the case progresses to the Competition Tribunal, a quasi-judicial body responsible for enforcing compliance with the Competition Act.