This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Credit: Unsplash/CC0 Public Domain Alphabet Inc.'s Google has spent the past week in Virginia federal court seeking to persuade a judge that selling off its advertising exchange is too risky, technologically difficult and would disrupt the market. Over the past five days, witnesses testifying on Google's behalf said that a for ...