SEO Metrics
DR vs DA: Which Authority Metric Should You Trust?
Ahrefs' Domain Rating and Moz's Domain Authority disagree because they measure different things. What each score actually counts, and which to use for what.
SEO Tools
Moz or Semrush for an agency: per-seat cost, client reporting and onboarding time
For an agency the decision is rarely about features. It is per-seat cost across a roster, how much report configuration each tool needs per client, how long a new hire takes to get productive, and which authority metric you can defend in a client call.