Ep 5: Send-all-bids vs top price

A common myth. Prebid only reports the winning bid.

Send-all-bids passes every bidder’s price to your ad server, not just the top one.

Three bidders answer on game.example. Two eighty, two forty and one ninety. In top price mode, Prebid sends one set of key-values, two eighty, from Bidder A. One set of line items covers every bidder. In send-all-bids mode, Prebid’s default, it also sends a key per bidder, like HB PB underscore bidder A. Now Ad Manager can report on every bidder, even losers, so you can spot a partner who bids often, but low. The cost is line items per bidder, and Ad Manager cuts key names longer than twenty characters, which quietly breaks targeting.

Check your setting today. If you send all bids, keep key names within twenty characters.

Next, the Prebid Universal Creative, how the winning ad renders.