What are the components of Ad Rank?

Ad Rank is calculated using your bid amount, your auction-time ad quality (including expected clickthrough rate, ad relevance, and landing page experience), the Ad Rank thresholds, the competitiveness of an auction,the context of the person’s search (for example, the person’s location, device, time of search, the …

For More Information Please Refer:
https://support.google.com/google-ads/answer/1752122?hl=en
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