The score that decides whether your ad shows and in what position. It is roughly your bid multiplied by your quality, with assets and context factored in.
Ad Rank is why paid search is not simply an auction won by the largest budget. A relevant advertiser with a well-built account routinely outranks a bigger one bidding more, and pays less per click while doing it.
It also explains why position changes without anything in your account changing. Ad Rank is recalculated for every single search, taking into account who else is bidding at that moment, on that device, in that location.
| Advertiser A | Advertiser B | |
| Maximum bid | $6.00 | $9.00 |
| Quality Score | 9 | 4 |
| Ad Rank | 54 | 36 |
| Position | 1st | 2nd |
| Actual cost per click | ≈$4.05 | ≈$8.10 |
Advertiser A bids a third less, ranks higher, and pays roughly half per click. The difference is Quality Score.
This comes up most often in Google Ads Management. Search campaigns built around intent, with negative keywords, conversion tracking and landing pages that match the ad.
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