Microsoft Monetize Holiday 2026 Updates: Copilot, OpenRTB and Prebid

On October 21, 2026, Microsoft Advertising introduced updates to Microsoft Monetize for publishers and advertising inventory owners. The company expanded Copilot capabilities, improved the data passed to demand-side platforms (DSPs), and announced the upcoming retirement of the legacy AppNexus Prebid Adapter.

The updates were timed for the holiday season, when advertising demand traditionally increases. They are intended to simplify programmatic deal management, reduce the time required to identify technical problems, and improve the efficiency of ad inventory monetization.

Copilot Can Now Troubleshoot Programmatic Deals

Microsoft added a new Deal Troubleshooting Agent to Monetize. The AI tool helps identify why a programmatic deal is not delivering the expected number of impressions or level of advertising spend.

Previously, publisher ad operations specialists manually reviewed deal settings, ad delivery parameters, and reports, checking potential causes of underdelivery one by one.

Now a user can ask Copilot to investigate a deal:

The agent performs several checks:

• Advertising deal settings
• Configuration of related objects
• Ad delivery metrics
• Potential causes of missing responses or insufficient buying activity
• Recommended next steps to resolve identified issues

Copilot produces a structured response with possible causes and recommendations.

For example, if a Preferred Deal does not receive the expected demand from a DSP, a publisher manager can use the agent for an initial diagnosis instead of manually reviewing multiple reports and settings.

The new capability builds on Copilot features previously introduced in Microsoft Monetize using the Model Context Protocol (MCP).

Copilot Adds Visual Charts to Advertising Reports

Microsoft also expanded Copilot's analytics capabilities in the October update. The AI assistant can now turn report results into four types of charts:

• Line charts
• Bar charts
• Pie charts
• Donut charts

For example, a user can request daily impression trends for a particular line item and receive a line chart.

This helps users identify changes in impression volume, compare individual placements, and present advertising operations data without additional exports to Excel or a business intelligence platform.

The feature visualizes existing Microsoft Monetize reports. It is not a separate advertising attribution measurement system.

Microsoft Expands CTV Ad Pod Signals Sent to DSPs

Microsoft Monetize has supported OpenRTB 2.6 requests with Dynamic Ad Pods since 2024.

In August 2026, the company expanded its DSP integrations to pass these signals to inventory buyers. The Trade Desk was the first partner.

An ad pod is a group of multiple video ad placements, a structure widely used in connected TV (CTV). Dynamic Ad Pods convey information about a pod's characteristics so a DSP can determine how to participate in an auction.

Passing OpenRTB 2.6 pod signals gives buyers additional context when selecting inventory and calculating bids. For publishers, it means more complete information about CTV inventory can reach potential buyers.

Amazon DSP Integration Optimizes Bid Stream Traffic

Another change affects the Microsoft Monetize integration with Amazon DSP.

The platform has started applying recommendations from Amazon Dynamic Traffic Engine locally to help manage the flow of advertising requests.

In programmatic advertising, each available impression can generate a bid request sent to a DSP. Not every request is equally valuable to a particular buyer, and DSPs have technical limits on the traffic they can process.

Dynamic Traffic Engine helps optimize request allocation based on Amazon's recommendations. Microsoft Monetize applies these recommendations on its side, directing available Amazon DSP capacity toward eligible publisher inventory.

The change is designed to make SSP-to-DSP interactions more efficient. Microsoft has not published universal quantitative results showing increased publisher revenue.

The Trade Desk Integration Speeds Up Programmatic Deal Activation

Microsoft also updated its Publisher Defined Programmatic API integration with The Trade Desk.

The change concerns synchronization of non-guaranteed deals, which do not guarantee the buyer a specific number of impressions.

Previously, creating a deal on the seller side and activating it in the DSP could involve additional operational steps and delays. The updated integration simplifies the transfer of available deal information and its subsequent activation by buyers.

For publishers, this reduces the manual work required to connect demand through The Trade Desk.

Expanded OpenRTB Signals Give Buyers More Inventory Context

In the fourth quarter of 2026, Microsoft Monetize introduced seven updates to OpenRTB signals. The goal is to give DSPs more complete, standardized information about each ad impression.

The updates cover the following areas:

More detailed signals allow DSPs to use additional context when evaluating inventory and setting bids.

However, Microsoft did not publish a full technical list of all seven changes, including the exact OpenRTB field names, in its October overview. This is an expansion of the information shared with buyers, not the introduction of seven new advertising formats.

Legacy AppNexus Prebid Adapter to Be Retired in Early 2027

Microsoft also announced a change to its header bidding infrastructure.

In early 2027, the company plans to retire the legacy AppNexus Adapter, remove it from Prebid.js, and discontinue support for the old endpoint.

Publishers need to migrate to the Microsoft Prebid Adapter and update Prebid.js to at least version 11.36.0, as specified by Microsoft.

That version supports the transmission of consent signals needed to interact correctly with certain DSPs, including Google Display & Video 360.

If consent information is not passed correctly, some advertising demand may be unavailable, creating a potential monetization risk.

Unlike the new Copilot features, migrating to the Microsoft Prebid Adapter requires specific technical action by the publisher or its header bidding partner.

More About Microsoft Monetize

Microsoft Monetize is a digital advertising inventory monetization platform for publishers within the Microsoft Advertising ecosystem. It builds on technologies previously known under the AppNexus brand and provides tools for managing placements and selling them through programmatic marketplaces.

Microsoft Monetize should not be confused with Microsoft Advertising products used by advertisers to run Search, Shopping, or Audience campaigns. The difference is the participant's role in the advertising market:

For example, a media company can use Microsoft Monetize to manage placements across its digital properties and sell impressions to buyers through Amazon DSP, The Trade Desk, and other platforms. Owners of CTV inventory can also use supported integrations to share information about video ad pods and enable programmatic buying.

A publisher's main operational tasks include inventory management, deal setup, delivery control, yield analysis, and access to advertising demand. These are the workflows addressed by the Microsoft Monetize holiday-season updates for 2026.