Ad rank is one of the important factor while serving the ads. When a user searches for something on a search engine, the backend system runs an auction. This calculation includes the bid, CTR, ad relevance, LP experience and much more.
Better ad relevancy means better Ad Rank
Points to remember:
- Maximum Bid
- Relevant ad copies, sitelinks
- Improve the relevancy of the landing page content and experience
***Highest quality score gives high ad rank