"Publishers and developers are increasingly searching for ways to make more money from their content in the rapidly evolving online mobile space. Google is working hard to provide those means of monetization so that mobile content can grow as quickly as we'd all like it to. AdMob accelerates this process for us with their talent and technology," explains Google. "Google currently makes a very small amount from mobile ads relative to our overall revenue, but the prospects for this space are excellent."
In the past year, Google has launched many feature that improved mobile ads: a new search ad format for iPhone and Android phones, ads for mobile apps, better AdSense ads for smartphones.
"Despite the tremendous growth in mobile usage and the substantial investment by many businesses in the space, the mobile web is still in its early stages. We believe that great mobile advertising products can encourage even more growth in the mobile ecosystem. That's what has us excited about this deal," mentions a Google blog post.
Google paid $750 million for AdMob, the third biggest Google acquisition after DoubleClick ($3.1 billion) and YouTube ($1.65 billion).