Ad Rank is a metric used by Google Ads to determine the position of an advertisement on a search results page. It is calculated based on several factors, including the bid amount, the quality of the ad, and the expected impact of ad extensions. A higher Ad Rank means a better position for the ad, which can lead to more visibility and clicks. Advertisers aim to improve their Ad Rank by optimizing their ads and targeting relevant keywords. This can involve enhancing the ad's relevance, improving landing page quality, and adjusting bids. A strong Ad Rank can result in lower costs per click and better overall campaign performance.