Ad networks are businesses who’ve large numbers of clients searching to run their banner or text ads across networks of web houses. These companies have both “advertisers” and “publishers”. Advertisers are those that want their ads to run, and publishers are web site operators who will allow space to be crammed with advertising. The ad networks serve as a middle man or go between both advertiser and writer.
Ad networks acquire fees from advertisers and pay a element of these fees to the publisher who really serves the ads. Publishers are paid in line with either how repeatedly and ad is displayed CPM or clicked on CPC. Ad networks are generally the preferred choice for web site operators who lack their very own sales representatives.