I hope this isn't a duplicate post, I tried searching through the posts but couldnt find anything on it.
I just got off the phone with a google rep. We serve over 100 million adsense ads through the API plus another 100 million through a 3rd party ad house. So at the moment there is no in house ad serving tool; hence my call to Google about DFP
They told me that we are suitable for their new "XFP" ad serving system, shortly to replace DFP. Anyone had any experience of it yet?