Alphabet, the group that owns Google, reported a 24% year-on-year increase in revenues (in constant currencies) for the fourth quarter of 2015 to 21.3 billion US dollars. Alphabet said the growth was driven by mobile search, YouTube and programmatic advertising. The number of paid clicks on adverts brokered by Google jumped 31% year-on-year, but the aggregate cost per click paid by the advertiser fell 13%.
Google said "the movement in Google Sites paid clicks and cost per clicks primarily reflects the continued growth in YouTube TrueView." TrueView is YouTube's brand name for video advertising formats that give the viewer more control over what they see.
On a call with analysts, Sundar Pichai, CEO of Google, said: "On our last call, I shared that six of our consumer products, Search, Android, Maps, Chrome, YouTube, and Google Play, all have over a billion monthly active users each. I'm pleased to share that Gmail now joins those ranks, crossing that number last quarter."
Ruth Porat, CFO, added: "We're now delivering about three times the compute power for the same amount of power or dollars we did five years ago. And that's an important point because it explains some of the slower capex in 2015. But given our commitment to have the most potent infrastructure, we do expect to increase capex in 2016." Sources: Alphabet statement and call transcript