A webhook is an automatic notification that one system sends to another when something happens. Instead of constantly checking for updates, webhooks push information instantly when triggered.
Why It Matters for Your Business
Webhooks enable real-time automation. When a customer places an order, a webhook can instantly trigger inventory updates, shipping labels, and confirmation emails—all within seconds.
Real-World Example
When someone books an appointment on your website, a webhook immediately adds it to your calendar, sends confirmation emails, and updates your availability—no delay, no manual work.
The Difference from APIs
While APIs require you to ask for information, webhooks proactively tell you when something happens. Think of it as the difference between constantly checking your mailbox versus having a doorbell that alerts you when mail arrives.