# webhook

CEFR C1 · Noun

Source: https://englishreference.com/word/webhook
Updated: 2026-07-22

## Definition

a way for one computer program to send information to another automatically when something happens. It is like a digital notification that tells a website to do something immediately after an event, such as a new payment.

For teachers: an automated message sent from one application to another when a specific event occurs, typically delivered via an HTTP POST request. It enables real-time data synchronisation between disparate web services without constant polling.

## Examples

- The payment system uses a webhook to notify our server of new sales.
- When a customer completes their purchase, a webhook triggers an automated email containing the download link for their software.
- Developers often implement webhooks to facilitate seamless integration between third-party platforms, ensuring that internal databases update instantly whenever an external status change is detected.

## Usage notes

- Commonly used with verbs like 'trigger', 'fire', or 'set up'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.