Google-certified ad networks in AdSense (Video)

Till now you were not allowed to run competitor ad-networks with Adsense. But in changing times Google is also changed and open doors for other ad-networks. So now you can run other ad-networks with Adsense, but there is a conditions ad-networks should be certified by Google. Simply these ad-networks are third-party ad networks. But these ad-networks are not allowed for all users of Adsense, perhaps this depend on area..