3 terms
ARR (annual recurring revenue) is the yearly value of a SaaS company's active subscription contracts, excluding one-time fees, used to measure scale and growth.
Churn rate is the share of customers or recurring revenue a subscription business loses in a period, a core SaaS metric for retention and growth.
MRR, or monthly recurring revenue, is the normalized monthly value of all active subscriptions, the core SaaS metric for tracking growth and momentum.