Dept. of Justice Probe into Google Zeroes in on Ad Tech

The DOJ has been investigating Google for suspected antitrust behavior. Now, it looks like the company's advertising technology business is emerging as a major focus of the investigation. Reporter Keach Hagey joins us to explain. Kateri Jochum hosts. Dow Jones & Co - publisher of the Wall Street Journal - has a content partnership with Gimlet Media, a unit of Spotify. It also has a commercial agreement to supply news through Apple services. Learn more about your ad choices. Visit megaphone.fm/adchoices