Message match is the continuity between what someone clicked and what they see next. It sounds obvious; it’s violated by most paid campaigns running right now, because ads and pages get written by different people at different times.
The three levels
- Verbatim match — the ad’s pinned headline IS the page’s H1. The gold standard for single-campaign landing pages; the visitor’s question (“right place?”) answers itself.
- Promise match — different words, same commitment. Acceptable when one page serves several close ad variants; risky beyond that.
- Topic match — the ad says “emergency repair”, the page says “our services”. This is where paid money goes to die.
Why platforms pay you for it
Google’s relevance scoring reads the same chain — keyword to ad to page — and prices your clicks accordingly. Tight match earns discounts; sloppy match subsidizes your tighter competitor. The rewrite that lifts conversion usually cuts CPC at the same time, which is why message match is the rare fix that pays twice.
The audit that takes ten minutes
For each ad group: read the top search terms, the served headline, and the landing H1 aloud, in sequence. Anywhere the thread breaks — the search asks for something the headline doesn’t say, or the H1 changes subject — you’ve found paid leakage with a known fix.