How they work
Instead of bidding on keywords, DSAs let Google crawl your site (or a page feed) and match relevant searches to the most fitting page, writing the headline dynamically. They are good at catching long-tail queries you never thought to add.
The control problem
Because targeting is driven by page content, DSAs can match off-intent searches and burn budget fast. They need aggressive negative keywords, page-feed scoping, and regular search terms report review. Used loosely they leak; used tightly they are a useful coverage layer.
DSA is becoming AI Max
Google is consolidating Dynamic Search Ads into AI Max for Search campaigns: starting in February 2027, campaigns using DSA are upgraded to AI Max automatically, and you can upgrade earlier by hand. The name changes; the discipline does not. Negatives, URL scoping, and search-terms review are what keep AI Max on intent too.
Common questions
What are Dynamic Search Ads?
Search ads where Google generates the headline and chooses the landing page by matching a query to your website content, instead of to keywords you selected. Useful for catching long-tail searches.
Are Dynamic Search Ads worth it?
They can be, as a coverage layer, but only with tight negatives, page-feed scoping, and frequent search-terms review. Without controls they match off-intent queries and waste budget. Plan for the move to AI Max: Google upgrades DSA campaigns automatically starting in February 2027.