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Header bidding & OpenRTB

Standards-based programmatic demand

MS Ads Network speaks OpenRTB 2.6 to connected DSPs, runs second-price auctions with per-unit floors, and keeps the supply path transparent with ads.txt and sellers.json.

Overview

Open, standards-based demand

Your ad requests are sent to connected DSPs as OpenRTB bid requests, so several buyers compete for each impression instead of one closed network.

Capabilities

What you get

OpenRTB 2.6

Banner, native, push and pop requests to connected DSPs.

ads.txt & sellers.json

An ads.txt line for every approved site.

Server-side feeds

XML/JSON demand feeds as backfill when no DSP wins.

Prebid.js adapter Coming soon

Client-side header bidding adapter.

How it works

Under the hood

Your pagead request MS Ads SSPfloor · geo · device DSP Abid DSP Bhighest bid XML feedbackfill VerifiedIVT checks Paidyour share
FAQ

Header bidding & OpenRTB questions

Can I connect my own DSP?+

Yes — DSP partners connect through an OpenRTB endpoint; contact us for the spec.

Do you support Prebid?+

A Prebid.js adapter is planned and marked as coming soon.

RTB auction flow
For publishers

What OpenRTB means for you

Your inventory is offered to several buyers at once instead of one closed network. Standard requests and transparency files make it easier for new DSPs to buy from you.

Connected DSPs

Several buyers can bid on the same impression.

XML/JSON backfill

Server-side feeds can fill requests when no DSP wins.

Supply transparency

ads.txt, sellers.json and the SupplyChain object show buyers the full path.

FAQ

Frequently asked questions

Do I need to set up header bidding?

No. Our tag handles the auction server-side. A Prebid.js adapter is planned for publishers who want client-side header bidding.