The AI marketing landscape just shifted again. Microsoft Advertising has rolled out significant platform enhancements that promise to give marketers unprecedented control over their Performance Max campaigns while simultaneously simplifying how automated bidding strategies work. These March 2026 updates represent a major leap forward for advertisers seeking more precision in their AI-driven campaigns without sacrificing ease of use.
Negative Keywords Arrive for Performance Max Campaigns
Perhaps the most anticipated feature in this release is the introduction of negative keywords for Performance Max (PMax) campaigns. This capability addresses one of the most persistent pain points for advertisers who have struggled with irrelevant traffic and wasted ad spend in AI-optimized campaigns.
Advertisers can now add negative keywords directly to their PMax campaigns through the Microsoft Advertising interface, giving them greater control over where their ads appear. The platform has also enabled API support and Editor integration, making bulk management seamless for agencies and enterprise marketers. Additionally, importing negative keywords from Google Ads is now supported, simplifying cross-platform campaign management.
It’s worth noting that negative keywords currently apply only to Search and Shopping inventory within PMax, but this alone represents a significant enhancement for conversion-focused campaigns. For marketers already using Jasper AI to craft high-converting ad copy, this update means even better alignment between messaging and qualified traffic.
Streamlined Bid Strategies Reduce Complexity
Microsoft Advertising has also restructured how bid strategies work, making them more intuitive while preserving the optimization power marketers rely on. The platform is streamlining Target CPA (tCPA) and Target ROAS (tROAS) by integrating them as optional target settings within broader bid strategies.
Going forward, advertisers will select either “Maximize Conversions” (with optional tCPA) for conversion-focused campaigns or “Maximize Conversion Value” (with optional tROAS) for value-focused objectives. This change eliminates redundant strategy choices while maintaining identical performance characteristics. Existing campaigns will continue running without disruption, and portfolio bid strategies remain unchanged.
This simplification comes at a crucial moment when marketers are managing increasingly complex multi-platform campaigns. For teams leveraging comprehensive platforms like Semrush to coordinate their advertising and SEO efforts, Microsoft’s streamlined approach reduces friction in campaign setup and ongoing management.
Why This Matters for Modern Marketers
These updates arrive as the advertising industry races toward full AI automation. While Meta has announced plans for complete campaign automation by end of 2026 and Google’s Performance Max continues evolving, Microsoft’s approach strikes a balance between AI-powered optimization and marketer control.
The negative keywords feature specifically addresses transparency concerns that have plagued fully automated campaigns. By giving advertisers the ability to exclude unwanted traffic, Microsoft is acknowledging that human strategic input remains valuable even in an AI-first advertising environment.
For businesses investing in AI marketing tools, these updates signal an important trend: platforms are competing not just on automation capabilities, but on giving sophisticated marketers the granular controls they need to maximize ROI. Whether you’re running campaigns through Microsoft’s ecosystem or comparing options across platforms, staying current with these capabilities is essential for maintaining competitive performance.
The updates are now available globally to all advertisers, with Health Check diagnostics for Lodging campaigns also reaching general availability to help hospitality advertisers identify and resolve feed issues quickly.
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