1A user triggers an ad request while using an app. Information about the user, available ad format, and other key factors are passed on to advertisers. Google sends the bidder application a bid request that describes an impression being auctioned. The bidder's account is configured to use the PROTOCOL_ADX RTB https://prevenzione-delle-frodi67899.bloggosite.com/34858871/i-annunci-programmatici-diaries