Google's Ad Revenue Hits $19 Billion, Even as Mobile Continues to Pose Challenges

During the second quarter of 2016, Alphabet's revenue hit $21.5 billion, a 21 percent year-over-year increase. Of that revenue, $19.1 billion came from Google's advertising business, up from $16 billion a year ago.

Even as consumers shift toward mobile, Google has struggled to make more money from smartphone-size ads that are typically priced less than desktop ads. During Thursday's earnings call, Google said cost per click was down 7 percent from last year.