This happens through auctions on Ad Exchanges, where publishers offer their ad inventory and advertisers bid on them, with winners’ ads finally shown to the visiting user. The whole process, from an app user triggering an ad request to the bidding process to the placement of the ad, happens in https://an-ncios-program-ticos97531.worldblogged.com/34414862/new-passo-a-passo-mapa-para-publicidade-em-sites