Google LLC
Google's 2017 Annual report
Mountain View, California, U.S.
As per its 2017 Annual report, Google generates most of its revenues from advertising. This includes sales of apps, purchases made in-app, digital content products on google and YouTube, android and licensing and service fees, including fees received for Google Cloud offerings. 46% of this was from clicks (cost per clicks), amounting to US$109,652 million in 2017.