Business
Net Dollar Retention (NDR)
Net Dollar Retention (NDR) = (starting MRR + expansion − contraction − churn) / starting MRR × 100. Measures revenue health of an existing customer cohort. Above 100% means customers grow faster than they leave; below 100% means leaky bucket.
More detail
Industry benchmarks: 110% = healthy SaaS, 120% = great, 130%+ = best-in-class (Snowflake, Datadog). For consultancy / managed services like Aiprosol, NDR is measured the same way — managed-plan customers either expand (more workflows, more users) or contract (downgrade tier, fewer workflows).