Billing Automation Overview Build automated billing workflows covering invoice generation, PDF rendering, payment processing, dunning (payment failure handling), and financial reporting. Handles proration, usage-based billing, multi-currency support, tax calculation, discounts, and professional invoice document generation. Instructions 1. Define the Billing Model - Flat subscription : Fixed price per period (monthly/annual) - Usage-based : Metered billing (API calls, storage, compute hours) - Tiered : Volume-based pricing with breakpoints - Hybrid : Base subscription + usage overage - Per-sea…