The Justice Department has reached out to more than a dozen companies in its antitrust probe of Google, including publishers, advertising technology firms and advertising agencies, as the company’s online ad tools become a major focus of the investigation, according to people familiar with the matter. In recent months, the department has been posing increasingly detailed questions — to Google’s rivals and executives inside the company itself — about how Google’s third-party advertising business interacts with publishers and advertisers, the people say.
Read the article: The Wall Street Journal
