Ad buyers lose key tool as Prebid breaks auction tracking system: Prebid removes cross-platform tracking that helped advertisers detect duplicate bids and waste, leaving demand-side platforms without crucial transparency tools. https://ppc.land/ad-buyers-lose-key-tool-as-prebid-breaks-auction-tracking-system/ #AdTech #DigitalMarketing #ProgrammaticAdvertising #Prebid #AuctionTracking