Plain-English meaning
A pricing model in which charges vary with measured consumption such as transactions, messages, storage, compute, or data volume.
Why it matters in a software decision
Variable demand, unit definitions, overages, and minimum commitments can make a low starting price difficult to forecast.
Where you may see it
Pricing calculators, usage dashboards, quotes, cloud bills, and commitment agreements.
What to verify
- Billable unit and meter
- Included allowance and minimum
- Tier, overage, and rollover rules
- Alerts, caps, and exportable usage data
Do not confuse it with
Usage-based pricing follows consumption; outcome-based pricing links price to a defined result. They require different evidence.
Procurement example
Model a base, expected, and stress case with the same unit definition used by the vendor's billing system.
This glossary explains procurement usage in plain English. Contract, privacy, security, accounting, and regulatory conclusions require context-specific review.