Practical example
An online store creates payment, receives a webhook, issues a receipt, updates the order, and notifies the buyer.
Acquiring, online checkout, payment statuses, notifications, and receipts.
Payment confirmed—
Receipt issued—
Order #482 updated✓
PaidAn online store creates payment, receives a webhook, issues a receipt, updates the order, and notifies the buyer.
Payment stays linked to the order from checkout through refunds and reconciliation.
Final cost depends on systems, data, and number of flows. Scope is fixed before work starts.