What is Webhook?
A webhook is the mechanism through which the network tells a tool, in real time, that an event happened: a comment arrived, a DM came in, a story mention occurred. Instead of the tool asking every so often, the network pushes the event as soon as it happens. It is what lets the automatic reply arrive in seconds and the inbox show the message immediately. It depends on the account being connected through the official API and on the tool having subscribed to the account’s events.