An advertising network, or ad network, connects businesses that want to run advertisements with websites that wish to host them. The principal attribute of an ad network is the gathering of ad space and matching it with the advertiser's needs.
An ad is used to transact media buys between advertisers and publishers.
The advertiser can set up the campaigns directly using an ad network’s campaign-management panel, or set up pixels from a third-party ad server for verification purposes and consolidated reporting when running the campaign across multiple ad networks and in direct deals with publishers.
When the ad is published, the advertiser can rotate multiple banners on the website using the ad network’s campaign-management panel without having to contact the publisher.