OpenRTB 2.3 Introduction

Document created by catherine.racette on Sep 3, 2017Last modified by catherine.racette on Sep 12, 2017
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Real-time bidding (RTB), also referred to as OpenRTB, is the programmatic means of enabling bidding of individual ad impressions through real-time auctions. Inventory is purchased on an open exchange, allowing many buyers to bid on inventory from multiple publishers in an auction. This can be a highly effective way to get access to large audiences through open exchange programmatic buys.


The following documentation describes the features of the OpenRTB PubMatic supports and limitations. The latest OpenRTB 2.3 specifications are available at These documents are designed to be used in conjunction with the OpenRTB 2.3 specifications.


OpenRTB 2.3 Documentation

OpenRTB 2.3 Integration Plan 

OpenRTB Bid Request Objects and Parameters 

OpenRTB Bid Response Objects and Parameters 

OpenRTB 2.3 PubMatic Extensions 

Open RTB 2.3 Examples 

OpenRTB Ad Server API Cookie Sync 

OpenRTB 2.3 Click Tracking 

OpenRTB 2.3 Win/Loss Notification 

OpenRTB 2.3 API Performance 

OpenRTB 2.3 Known Limitations & Reference