Group 1 - The U.S. Department of Justice is seeking to force Google to sell its core online advertising business, specifically the AdX advertising trading platform, which charges publishers a 20% fee for ad auctions [1][2] - The government also demands that Google open-source its ad bidding algorithm to enhance transparency and competition, following a previous ruling that found Google to have an illegal monopoly in the online advertising technology sector [2][3] - The case against Google is part of a broader bipartisan effort to regulate large tech companies, which has included ongoing cases against Meta, Amazon, and Apple [1][2] Group 2 - In response to the threat of divestiture, Google has proposed alternative solutions, suggesting policy changes to make it easier for publishers to use and support competing platforms instead of selling AdX [3] - Google argues that the Department of Justice's proposal is technically unfeasible and would create long-term uncertainty for advertisers and publishers [3] - Internal research regarding a potential sale of AdX may be presented as evidence in the trial, as Google had previously considered selling AdX during private negotiations with the European Union [4]