A webhook user- Defined HTTP callbacks (also called a web call back or HTTP push API) is a way for an app to provide other applications with real-time information.

A webhook delivers data to other applications as it happens, meaning you get data immediately. Unlike typical APIs where you would need to poll for data very frequently in order to get it real-time.

They are triggered by some event in a web application and can facilitate integrating different applications or third-party APIs, like Twilio.

Webhook generates HMAC key and creates HMAC signature, These signatures are a way to sign a payload using a secret that only the event and listening servers know.

HMAC keys works based on the status Active/Inactive.