| Pricing | Defines how much to charge — rate cards, usage-based rules, tiered pricing, RUBS, and multi-condition charging logic |
| Subscription | Enrolls a customer onto a plan — captures contract terms, links to a billing account for invoicing, and tracks the usage that accrues each period |
| Billing | Turns pricing into invoices at scale — bill runs, draft review, usage ingestion, meter reads, and arrears carry-forward |
| AR Management | Everything after the invoice — credit notes, cash application, aging schedules, late payment charges, and customer subledgers backed by a formal ledger |
| Reporting | Monthly sales and payments, aged receivables, bill-run output, and usage — by bill run or by subscription |
