Rubicon Project's Jay Stevens wrote in The Guardian that mobile advertising needs to be a "bolt-on" to programmatic display in order to reach its full potential. "However fast growing, the user numbers in mobile are still not yet big enough for publishers to dedicate direct-sales resources to the channel, and given the legwork and tech complications that still surround it, there's just no simple way to combine the desktop-plus-mobile buy," he wrote.
Stevens concluded, "...if mobile advertising were a simple bolt-on to programmatically traded display, complete with quality mobile sites and apps, and similar controls to the ones publishers are used to when they sell direct, the sky becomes the limit."