software

Webhook

Definition

A webhook is a user-defined HTTP callback that delivers real-time notifications from one system to another when an event occurs. Rather than polling an API repeatedly, the event source sends an HTTP POST to a registered URL when the event fires.

Webhooks are fundamental to integrating third-party services in event-driven systems and are ubiquitous in developer platforms like GitHub, Stripe, and Twilio.

Related Terms

API

Application Programming Interface

Event-Driven

Event-Driven Architecture

Pub/Sub

Publish-Subscribe Pattern

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