Domain Authority (DA) is a metric on a 1-100 scale estimating how strong a whole domain is in a search engine’s eyes and how high it can rank. Note: it is a measure from the company Moz, not an official Google metric. It shows an estimate and a comparison with competitors, not an actual ranking. It is best treated as an auxiliary signpost and a trend indicator, not a goal in itself. (Compare: PA, Backlink)