New York, California and Virginia were among the states that signed on to the complaint, which was filed in federal court in Virginia.
The US Justice Department and eight states sued Alphabet Inc.’s Google, calling for the break up of the search giant’s ad-technology business over alleged illegal monopolization of the digital advertising market.
“The lawsuit we have filed today seeks to hold Google to account for what we allege are its longstanding monopolies in digital advertising technologies that content creators use to sell ads and advertisers use to buy ads on the open Internet,” said the Justice Department’s antitrust chief Jonathan Kanter in a news conference Tuesday announcing the suit.
