There has been a drastic change within the digital advertising landscape. The rapid digitization of advertising as a whole has resulted in the formation of numerous businesses, each one offering a unique product or service that aids the overall online advertising process and adds value to the link between a publisher and an advertiser. These players are Ad Networks. With these new players in the ecosystem, the digital advertising model has evolved and is no longer the simple model of days gone by. It has evolved into a much more complex model.
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