intermediate
How an RTB Auction Works
The OpenRTB request/response cycle end to end — what is in a bid request, how a DSP prices it in under a millisecond, and what the 100ms timeout really constrains.
3 minUpdated Nov 10, 2026
OpenRTB, first-price mechanics, bid shading and floors — the 300ms in which the money is actually decided.
2 articles · about 7 minutes of reading
Assumes you know Marketing Fundamentals.
The OpenRTB request/response cycle end to end — what is in a bid request, how a DSP prices it in under a millisecond, and what the 100ms timeout really constrains.
Why the industry abandoned second-price auctions, what that broke for buyers, and how shading algorithms reconstruct the price discipline that was lost.