Rubenstein told AdExchanger.com that after 3.5 years of growing AdX, it seemed like the right time to pursue his entrepreneurial instincts. At AppNexus, he'll become the company's President.
He added that his decision has nothing to do with any shortcomings in Google-land where he believes Google Doubleclick's ad exchange will become "the class of the ad exchange field."
Nevertheless, for Rubenstein, the opportunity to work with bright minds in the ad tech space including former Right Media stars, CEO Brian O'Kelley and CTO Mike Nolet, as well as an impressive AppNexus team, was hard to pass up saying, "It's hard to find young companies that have the mixture of energy and experience of AppNexus."
Rubenstein promises that there's more to come from AppNexus in the months ahead as it evolves in the online advertising space.
Read the release on Mike On Ads (AppNexus CTO Mike Nolet) blog.