Google and the Department of Justice met one final time in an Alexandria, Virginia courtroom to debate the future of Google’s online ad tech juggernaut.

Google, already facing a possible breakup of the company over its ubiquitous search engine, is fighting to beat back another attack by the U.S. Department of Justice alleging monopolistic conduct, this time over technology that puts online advertising in front of consumers.

The Department of Justice (DOJ) and Google wrapped up the tech giant’s second antitrust trial in two years Monday, as the company seeks to fend off monopoly allegations in the advertising technology space.

The DOJ said that Google "rigged" ad auctions in a way that hurt the competition in its closing arguments at an antitrust trial, but it isn't clear how the US District Court Judge will rule.

The U.S. Department of Justice and Google both delivered closing arguments in the U.S. antitrust trial concerning Google's ad business.