Continuing the red hot focus on mobile ad networks, US company InMobi has announced it's secured $8 million in its second funding round from existing investors Kleiner Perkins Caufield & Byers and Sherpalo Ventures.

This brings its total funding to more than $15 million.

The company claims to be the world's largest independent mobile ad network with 16.9 billion monthly impressions reaching 179 million consumers in 108 countries.

This compares to the industry leader, and Google-owned, AdMob's 18 billion monthly impressions.

Bulking up

InMobi says it will use the money to double its engineering staff as well as focus on its recent US expansion, launch in Japan and continue to grow existing operations in Europe, Asia Pacific and Africa.

"Since our launch in 2007, we have focused on building global expertise in mobile ad serving technology with a highly scalable platform," said Naveen Tewari, CEO and founder.

"This additional funding will help us capitalise on our early success and enable us to aggressively compete in major advertising markets globally."

The company highlights its AdROIt analytics engine as being crucial to its growth.

It has plans to further develop the detailed real-time analytics that underpin its ad serving process, enabling customers to automatically enhance ROI, and help advertisers maintain a targeted buy at a global scale.

[source: InMobi]