Webhook

What it is

A webhook is a configuration that sends event notifications to an external URL. It includes a target URL, subscribed event types, optional store scope, secret, concurrency limit, and status.

Why it exists

It exists to support event-driven integrations. Instead of polling resources, a client can subscribe to events and react when something changes.

How it relates to other concepts

Webhooks can subscribe to events related to resources such as sales or transactions. A webhook can optionally be tied to a specific Store. Applications also have an event subscription concept, which is closely related but defined as part of the application itself.