SAN FRANCISCO (AFP) - Google reported on Thursday that its quarterly profit rose with a jump in revenue and released word that its chief business officer was leaving the company.

High-profile executive Nikesh Aurora took a moment on the earnings call to thank Google for a "phenomenal" 10 years and said he looked forward to "cheering them on from the sideline". Arora will be replaced in the interim by Omid Kordestani, a business founder who led Google's sales teams.

Google chief financial officer Patrick Pichette steered talk on the call away from Aurora's career move to a job at Japan's SoftBank, saying he wanted to keep focused on freshly-released quarterly earnings figures.

PAID CLICKS POP

The California-based Internet titan said its profit jumped during the three months ending June 30, rising six per cent from a year ago to US$3.42 billion (S$4.2 billion).

Revenue was up 22 per cent year on year, at US$16 billion.

"We are moving forward with great product momentum and are excited to continue providing amazing user experiences, with a view to the long term," Pichette said.

Google shares rose slightly more than a per cent to US$580.69 in after-market trading that followed release of the earnings figures.

Google said a key factor in revenue was the jump in "paid clicks", for ads related to searches on Google and its partner sites.

Total paid clicks were up 25 per cent from a year ago and two per cent from the past quarter, while the average cost per click was down six per cent from a year earlier.

Google is the leader in digital advertising with a 31.9 per cent share of the global market in 2013, according to the research firm eMarketer. The closest rival was Facebook with 5.8 per cent.

According to eMarketer, Google has more than 50 per cent of the worldwide mobile ad market.

Google's profit per share was US$6.08, about 16 US cents below analyst forecasts but revenues were better than the average estimate of US$15.6 billion.

SELF-DRIVING CARS

While Google makes most of its money from digital advertising, it has been moving into new areas such as home automation, self-driving cars and wearable technology like Google Glass.

Pichette told analysts that Google takes a venture capitalist approach to new projects, calling on teams to hit milestones and make their cases when it comes to being funded.

With projects such as autonomous cars underway in the Google X lab, payoff could be years away, while new software creations could generate faster returns.

Google's Chrome and Android operating systems will be wound more tightly together as the technology titan makes a priority of providing experiences and services that transition smoothly from one screen to another to be in tune with arrays of devices becoming common in people lives.

"They are basically converging," Pichette said of Android-powered mobile devices and the Chrome operating system for computers that essentially act as gateways to the Internet.

"We have a lot of cross-pollination of teams." The chief financial officer told analysts that Google has about 60 per cent of its cash reserves outside the US and that there was an "interesting case" for keeping it there.

"We do have great opportunities outside the US to invest our cash," Pichette said, noting opportunities for acquisitions, building data centres and expanding offices.

He added that Google has "exciting plans" for its capital in the Asia Pacific and Europe regions.