The U.S. Federal Trade Commission has completed an inquiry into the Google AdMob acquisition; after concerns fearing competition in the mobile advertising realm would decline given AdMob has the highest market share in the mobile advertising market.

The FTC said in a statement, “[it] was concerned about the loss of head-to-head competition,” given Google has about 65-percent of the global online search market, and is also the market leader when it comes to online advertising.

The FTC said its decision to clear the acquisition was based on Apple announcing it would enter the space with iAd, and its acquisition of Quattro Wireless.

The commission said it would continue to monitor the mobile market space.

As more consumers use mobile devices, including Android, iPhone, and iPad devices, the mobile advertising market is quickly growing.

Firms have already adapted their advertising networks, such as Google’s AdSense platform, to better work on mobile devices; the only challenge now remains for web developers to develop mobile versions of existing sites to support mobiles.