Domain Authority can be a useful metric to provide insight into a website's potential performance in search rankings. However, it’s just a tool for benchmarking and not a factor that search engines (i.e. Google) use for ranking. That being said, a correlation between DA and SERP ranking has been found in various studies.

When you have the DA scores of multiple domains, you can use it as a valuable benchmarking tool to compare the relative strength of different websites within the same niche or industry. This is useful when looking at your competitors and seeing how hard it will be to compete against them in search engines. It enables businesses to set realistic goals for improving their online visibility and competitiveness.

Domain Authority can also be helpful when identifying potential backlink opportunities. Websites with higher DA scores typically indicate stronger authority and credibility in their respective fields. This means when evaluating backlink prospects, prioritizing websites with higher DA can be advantageous as these links can positively influence a site's own authority and search engine rankings.