Dynamic Search Ads (DSA) to AI Max: The 2026 Transition Guide
Dynamic Search Ads (DSA) have helped eCommerce advertisers capture long-tail queries from site content since 2011. In April 2026, Google announced that legacy DSA campaigns will auto-upgrade to AI Max starting September 2026.
What are Dynamic Search Ads?
DSA crawls your site and builds ads when a query matches page content — filling gaps where you did not add explicit keywords. Large catalogs benefited from incremental long-tail coverage.
What is AI Max?
AI Max for Search extends RSAs to additional semantically relevant queries beyond your keyword list — broad reach similar to DSA with stronger creative control. It introduces Smart URL Selection to land users on the most relevant page instead of relying only on crawl-based matching.
DSA vs. AI Max (summary)
| Feature | DSA | AI Max |
|---|---|---|
| Query matching | Website crawl-based | AI semantic matching |
| Headlines | Often auto from page | Your RSA assets + AI expansion |
| Landing page | Auto-matched | Smart URL selection |
| Reporting | Basic | Asset-level + audience insights |
| Control | Limited | More creative + URL control |
| Timeline | Sunset Sept 2026 | Current standard |
How to prepare for the transition
- Audit DSAs — Export top queries, landing pages, and budget.
- Strengthen RSAs — AI Max depends on diverse, high-quality headlines and descriptions.
- Expand negatives — Broader query matching makes negatives more important.
- Configure URL expansion rules — Control which URLs AI Max may use.
- Monitor post-upgrade — Allow roughly 2–3 weeks before major conclusions.
Related: Campaign types guide (AI Max on Search) · Keyword research · Pillar guide