MRR is usually reported with a bridge: opening balance, plus new, plus expansion, less contraction, less churned, giving the closing balance. That bridge is far more informative than the total, because it shows whether growth comes from new logos or from existing customers spending more.
For businesses on annual contracts MRR is simply annual-recurring-revenue divided by twelve and adds nothing. It earns its place where billing genuinely is monthly and churn is meaningful month to month.
Example: Northwind Cloud's self-serve tier opens at $1.42M of MRR, adds $180k new and $95k expansion, loses $62k to contraction and $118k to churn, closing at $1.52M.
Related: annual-recurring-revenue, churn-rate, net-revenue-retention, run-rate-note, unit-economics