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# Responsive Search Ads (RSA)
- URL: https://www.adlingo.org/glossary/responsive-search-ads/
- Published: 2025-01-15T09:49:00.000Z
- Updated: 2025-01-15T09:49:00.000Z
- Description: A search ad format that automatically tests different combinations of headlines and descriptions to determine which performs best.
- Author: Travis Lusk
- Tags: Google & Regulation, #glossary, #Import 2026-10-27 17:05

Google's format that assembles ads dynamically from a set of headlines and descriptions you provide. The algorithm tests combinations and concentrates delivery on the ones that perform. You give up control over which combinations run. In exchange, you get continuous creative testing without manual A/B setup. The practical implication: write each headline and description so it works independently, because you cannot control which ones appear together. Asset performance ratings give you directional feedback, not full transparency into the testing logic.