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Messaging Guidelines for AI Ads Open to More Advertisers

October 30, 2026

A woman sits at a desk with a laptop, an open notebook, and a cup of coffee. She is looking thoughtfully to the side, wearing a gray jacket, with a calm and focused expression.

Messaging guidelines for AI-generated ad copy in Microsoft Advertising are now available in an open pilot.

This feature allows advertisers to set up to 40 guidelines for maintaining brand consistency and controlling ad content across Performance Max and AI Max for Search campaigns. These guidelines enable better steering of generated copy by setting parameters on claims, themes, tone, and more.

Previously, this feature was in a closed pilot, as reported in our earlier article on Microsoft’s text guardrails update. With the pilot now open, advertisers have more tools to ensure AI-created ads reflect their brand values effectively.

Read the official announcement here: Build, steer, and measure your campaigns with AI: What’s new in Microsoft Advertising this October.