SaaS & Subscriptions / Customer Success
Cohort Retention Curve (Survival)
How much of a starting group of customers, or of their revenue, remains active as the group ages, month by month.
The fork, why two teams get different numbers
Three forks change what the curve says.
In the Metric Library
- The full fork, both definitions worked all the way through
- The trap that makes the number lie, on a real export
- Every formula variant, spelled out
- The reconciliation anchor, what to tie it to and when to refuse
Reference: SaaS operating-metric convention (no single standards body) · survival-analysis method (actuarial / Kaplan-Meier as reference)