Self-Service Billing Portal — Gives customers direct access to their invoices, usage detail, payment methods, and plan changes without filing a ticket. It reads from invoicing, metering, and the payment vault, and routes disputes and upgrades back into the pipeline.
Where it sits in the lifecycle
Self-Service Billing Portal lives in the Rate & Bill phase
of Fulfill & Bill — the stage where you activate what was sold, meter what's used, bill it right.
In the corpus tool index this phase maps to the Billing and Paymentscategories.
What strong looks like
The critical requirements that test this capability in UsagePricing's
AR automation & collections rubric —
scored tool profiles link from the list below.