Ad networks (advertising network, banner network, online ad network) are advertising companies which administer ad sales, billing, serving and collection for web sites. Ad networks often aggregate sites into specific categories or demographic groups, then sell ad inventory to advertisers either to specific sites within the networks, specific catego [..]

An OpenX account type, which represents a business that manages other businesses and typically contains and manages both publisher accounts and advertiser accounts.

A company that connects websites with advertising to sell, then aggregates that inventory for advertisers to buy, usually via programmatic exchanges.

Allows app developers to create customized interstitial and video ads, promote new apps, and swap traffic with other developers.

An online or mobile ad network enables companies to target users with advertisements in multiple locations, and may track individual behavior.

 An aggregator or broker of advertising inventory for many sites. Ad networks are the sales representatives for the Web sites within the network.  

A company that deals with advertisers and publishers to manually buy and sell ads across the web. Top players include Google Display Network, AOL’s Advertising.com, Millennial Media.