SEO
Domain Authority
Plain-language definitionA third-party estimate of how likely a domain is to rank based largely on its link profile. It is not a metric used directly by Google.
Why it matters
Use the term to make a better decision.
In practice, domain authority matters when a team needs to connect a technical or creative choice to a visible change in clarity, performance, discovery, or conversion. The useful question is not whether the term sounds sophisticated. It is what decision it helps the team make.