Domain Authority (DA) is a term coined by the SEO consulting and research company “Moz”. Actually, it is a likelihood algorithm used to measure the potential of website to rank in the search engine ranking. It is a metric which describes a domain’s relative “strength”. Moz DA metric is widely considered to be one of the best third party tools for evaluating domain strength. This algorithm estimates the potential of the website on huge complex combination of factors including onsite and offsite optimization, domain linking, and several other factors, and provides result with a score between 0 and 100. The higher the score your website gets, the more will be its probability or likelihood to rank in the searches.