An Internet business model where advertisers go to one source to buy advertising on several Web sites at once through run-of-category and run-of-network buys.

a network representing many Web sites in selling advertising, allowing advertising buyers to reach broad audiences relatively easily through run-of-category and run-of-network buys.

an aggregator or broker of advertising inventory for many websites. Advertising networks are the sales representatives for the Web sites within the inventory.

The middleman between advertisers and websites. These networks consolidate advertising space and match it with paying advertisers. The most prominent example is the Google Search Network, in which adv [..]

Also known as “ad networks,” a company that provides a single point of contact for sales representation for multiple websites by aggregating all the sites’ advertising inventory. Ad networks are used by advertisers, agencies to reach audiences and by publishers, typically to sell remnant inventory. 

An advertising network (ad network) is an online business that specializes in matching up advertisers to websites looking to host advertisements. Advertising networks work as brokers for both supplier [..]

Sells ads across multiple publishers in order to optimise ad delivery based on the user rather than context.

A company that serves as a broker between a group of publishers and a group of advertisers. Networks traditionally aggregate publisher inventory and broker that inventory to advertisers or other ad ne [..]