What Is OpenRTB
Purpose
This document introduces OpenRTB as the most widely used standard request and response framework for real-time bidding.
Key Takeaways
- OpenRTB standardizes auction communication between SSPs or exchanges and DSPs.
- It does not define every part of the ad platform lifecycle.
- Reading OpenRTB well means understanding objects such as
imp,site,app,device,user, andregs.
Why It Matters
- It creates a common language for bidding.
- It reduces integration friction between demand and supply systems.
- It helps teams understand which data shapes auction decisions.
One-Page View
Draft Structure
1. What OpenRTB covers
- bid requests
- bid responses
- auction context
2. Adjacent topics to read next
- ads.txt and app-ads.txt
- creative rendering and
adm - verification and measurement
3. First objects to learn
impsiteorappdeviceuserregs
Next Documents
- How to Read site, app, and imp
- OpenRTB 2.6 Required and Recommended Fields at a Glance
- How to read OpenRTB top-level control fields
- What OpenRTB 3.0 aimed for and what returned in 2.6
- What Goes in the adm Field