Ad exchanges are technology platforms that facilitate the bidded buying and selling of online media advertising inventory from multiple ad networks. The approach is technology-driven as opposed to the historical approach of negotiating price on media inventory. This represents a field beyond ad networks as defined by the Interactive Advertising Bureau (IAB),[1] and by advertising trade publications Advertising Age,[2] iMediaConnection[3] and ClickZ.[4]
The major ad exchanges include AdECN,[5] which is owned and was purchased by Microsoft in August, 2007 but may have recently been closed down, Right Media,[6] which is owned and was purchased by Yahoo! in April 2007, ContextWeb's Exchange, the leading independent exchange, DoubleClick Ad Exchange, which is owned by DoubleClick,[7] a Google subsidiary purchased in May 2007, QZedia, Adkaw, Adbrite and Zinc Exchange,[8] an exchange selling guaranteed impression delivery on newspaper sites.
Ad exchanges can be useful to both buyers (advertisers and agencies) and sellers (online publishers) because of the efficiencies they provide.[citation needed]
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)