SAN FRANCISCO (AP) — A federal judge on Tuesday ordered a shake-up of Google’s search engine in an attempt to curb the corrosive power of an illegal monopoly while rebuffing the U.S. government's attempt to break up the company and impose other restraints.

The 226-page decision made by U.S. District Judge Amit Mehta in Washington, D.C., will likely ripple across the technological landscape at a time when the industry is being reshaped by breakthroughs in artificial intelligence — including conversational “answer engines” as companies like ChatGPT and Perplexity try to upend Google’s long-held position as the internet’s main gateway.

The innovations and competition being unleashed by AI also reshaped the judge’s approach to the remedies in the nearly five-year-old antitrust case brought b

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