Invoicing
An invoice is built from a contract and the usage rated against it.
Cadence vs. on-demand generation
An invoice generates on the contract's cadence, on schedule and unattended, or on demand through Penny or the UI.
Line items
An invoice's line items map back to the economic events that produced them.
Created and sent together
An invoice is created and sent in the same step, on schedule or on demand.
Worked example
Driftmetric's invoice: one line item at $0.02 × 12,000 = $240.00, generated automatically on the contract's monthly cadence.