Quantitative & Qualitative
The B2B SaaS PMF Signal Stack
01
Retention
Flattening curve at 20–40% indicates a core group of users never leave.
SIGNAL: Flat Tail
02
Language
Users describe value using the exact terms from your positioning.
SIGNAL: Verbatim Match
03
Expansion
Net Revenue Retention stays consistently above 110% as cohorts mature.
SIGNAL: >110% NRR
04
Pricing
Users accept price increases without significant churn or resistance.
SIGNAL: Pricing Power