saas-customer-analyticslisted

# SaaS Customer Analytics > **Core Insight:** Revenue is a lagging indicator. Behavior is the leading one. > By the time MRR drops, the subscriber already disengaged weeks ago. > Build systems that detect behavioral decay, not just billing events. ## The Architecture (Data Flow) ``` Stripe/PayPal Webhooks │ ▼ Immutable Payment Event Ledger ──────────────────────────────────────────┐ │ │ ▼ │ Subscription Status (mutable, current state only) │ │ │ ├──► MRR/ARR Calculation ◄───── Organization Billing │ │ │ │ │ ├──► Unit Economics (ARPU, LTV, gross margin) │ │ ├──► Break-Even Analysis │ │ ├──► Runway Calculator │ │ └──► Revenue Projections (30/60/90d) │ │ │ ├──► Churn Rate (30d/90d windows) ──► Monte Carlo Simulation │ │ │ ├──► Payment Fee Tracker ◄───────────────────────────────────────────┘ │ (queries ledger, NOT mutable subscriptio