🔥 Tier 1 - Must KnowID: rtbRealTimeBidding
RTB - Real-Time Bidding
Millisecond auction mechanism determining impression winners via 1st or 2nd-price logic
In Simple Words (Zero Jargon):
The automated lightning-fast auction that calculates who wins each individual ad spot and how much they pay based on real-time competitor bids.
Why It Is Critical
Most modern programmatic auctions have shifted to First-Price auctions (winner pays exactly what they bid). Bidding strategies must be calibrated to avoid overpaying for impressions.
'In an RTB auction, the price you pay is a function of your competitors' bids, not your own budget. A campaign that looks expensive may simply be bidding into highly competitive inventory, not performing worse.'
What You Get: An understanding of why programmatic CPMs fluctuate dynamically based on auction density and seasonal competitor bidding.