4c7fdc08_rends__Technology_and_Research__Ad_Exchange
[Category] Key Players [Ad Network] Google's AdSense, Yahoo Publisher Network, AOL’s Advertising.com [Ad Exchange] 
DoubleClick exchange, Yahoo Right Media, OpenX Market (OpenX), AdECN (Microsoft)
Difference between Ad Network and Ad Exchange | Media & Entertainment Industry Trends, Technology and Research
Ad Exchange