Webhooks allow third party systems to get notified when certain events happen in RPM. Whenever the event occurs an HTTP POST request is sent to a specific URL with details of what happened and which form was affected.
The list of RPM webhooks and instructions on how to use them is found here. To set up a webhook in RPM, follow: Setup >> Webhooks >> +Add a webhook.
Webhook usage history is found here Setup >> Webhooks >> Usage history.