Webhooks are an essential communication mechanism for modern web applications because they allow asynchronous communication between two systems. A common example for this is a payment provider that notifies your application about a status change of a payment.
You can use https://expose.dev/ to share your local application and receive webhooks – without complicated and even risky port forwarding rules.
You can now use the Expose URL as the webhook URL and the payment provider will send the webhook to your local application.
When you are testing webhooks, you often want to retry the webhook to test your application with the same payload again.