Bing Has Their Own Version Of PageRank It's Page Score

Bing website ranking is completely automated. The Bing ranking algorithm analyzes factors such as webpage content, the number and quality of websites that link to your webpages, and the relevance of your website’s content to keywords. The algorithm is complex and is never human-mediated. You can’t pay to boost your website’s relevance ranking. However, Bing does offer advertising options for website owners.

Each time the index is updated, previous relevance rankings are revised. Therefore, you might notice a shift in your website’s ranking as new websites are added and others become obsolete.

Although you can’t directly change your website’s ranking, you can optimize its design and technical implementation to enable appropriate ranking by most search engines.