Umbraco Commerce makes use of the webhooks feature added in Umbraco v13. See the Webhooks documentation for general webooks configuration.
Events
Umbraco Commerce triggers webhooks for the following events:
Order Finalized - Triggered when an order is converted from a cart to an actual finalized order. This event is useful for notifying external systems of new orders.
Order Status Changed - Triggered when the status of an order changes. This event is useful for notifying external systems when an order is ready to ship, or has been canceled.