What is Salesforce Billing and how does it integrate with CPQ?

Salesforce Billing is a separate managed package that extends CPQ to automate the invoice-to-cash cycle. Integration overview:

1. Orders from CPQ: When a CPQ quote is contracted, it generates Salesforce Orders and Order Products. Billing picks up these orders as the billing source.
2. Billing Schedules: Billing defines when invoices are generated — monthly, quarterly, annually, or on a custom schedule — per order product.
3. Invoice Generation: Billing automatically creates Invoice records (blng__Invoice__c) aggregating line items from the billing schedule. Invoices can be auto-posted or held for review.
4. Payment Processing: Billing integrates with payment gateways to process credit card or ACH payments against invoices.
5. Usage-Based Billing: Usage records (metered consumption) can be fed into Billing to generate usage-based invoice lines.
6. Revenue Recognition: Billing can post revenue to Salesforce Revenue Cloud or export to ERP systems. The CPQ → Billing data flow is: Quote → Contract → Order → Billing Schedule → Invoice → Payment. A CPQ Specialist should understand where CPQ's responsibility ends (contracted order) and Billing's begins (invoice generation onwards).