When an advertiser runs programmatic ads, their bids compete with hundreds of thousands of other bids for the same ad inventory in an auction. Advertisers need to have transparency into how such auctions are conducted, and winners are chosen.
InMobi Exchange runs all its auctions on a First Price Auction model.
A First Price Auction is an auction model where the buyer pays the price; they bid for a given ad opportunity or impression.
InMobi Exchange passes the auction type to a DSP within the oRTB bid request as recommended by IAB. Within the oRTB bid request, “auction type” is represented as “at:”. Since InMobi Exchange runs exclusively on First -Price auctions, the value passed in the request will be “at:1.”
InMobi sends demand partners real-time notifications to indicate when an impression has been served and billed and when a bid is lost, and the reason for the loss.
The following figure illustrates the OpenRTB interactions between an exchange and its bidders. For each inbound ad request, bid requests are broadcasted to bidders, responses are evaluated under prevailing auction rules (at InMobi), and a winner is selected.
The win notice is essential to inform the bidder’s pricing algorithms of success, whereas the billing notice indicates that spending should be applied.
The URLs for the win, billing, and loss notices and the ad markup itself can contain any of several standard macros that enable InMobi to communicate critical data to the bidder (e.g., clearing price).
It’s essential that the bidder is either oRTB 2.3 or oRTB 2.5 compliant and provide an HTTP/HTTPS endpoint to receive auction notification responses.
By installing this SDK update, you agree that your Children Privacy Compliance setting remains accurate or that you will update that setting, whenever there is a change in your app's audience. You may update the app's Children Privacy Compliance settings at https://publisher.inmobi.com/my-inventory/app-and-placements.