This guide provides a complete, step-by-step walkthrough of implementing usage-based billing in Salesforce Revenue Cloud (ARM) — from initial product configuration to final invoice generation. Using a real-world scenario ($10/month plan with 1,000 included units and tiered overage pricing), the lifecycle is broken into two clear parts: Part 1 — Product & Usage Configuration, and Part 2 — Quote → Order → Usage → Invoice Execution.