Which scenario best illustrates a webhook's typical usage?

• A. A static HTML page fetch
• B. A user manually requests data via a browser
• C. A database backup script
• D. An application automatically notifies another service when an event occurs

Answer: (D)

Webhooks are a push-based way for one service to notify another when something happens. Instead of you repeatedly checking for updates (pull), a receiving service exposes an HTTP endpoint and the sending service calls that endpoint with a payload whenever a specific event occurs. This enables near real-time, automated integration between apps.

The scenario that best illustrates this is when an application automatically notifies another service when an event occurs. For example, an e-commerce platform can post a message to a merchant’s system whenever a new order is placed, triggering order fulfillment without human intervention.

The other options describe pulling data or manual actions rather than automatic, event-driven notifications. A static HTML page fetch involves the client pulling content, a user manually requests data via a browser, and a database backup script is an internal automation rather than a notification to a separate service.