A Webhook is a mechanism that allows applications to send real-time notifications to other systems whenever specific events occur. Unlike traditional APIs that require polling (periodically checking for updates), webhooks automatically send data to a designated endpoint when an event is triggered.
How Does a Webhook Work?
- Event Occurs: A webhook is triggered when a predefined event happens in the source application, such as a successful payment, a new booking, or a status update.
- Data is Sent: The webhook sends a request (typically an HTTP POST) containing the event's data in the body to a callback URL (the receiving application’s endpoint you’ve configured).
- Process the Data: The receiving application processes the data and performs an action, such as updating records, sending a notification, or triggering another workflow.
For example, when a payment is successful, the payment processor’s webhook sends transaction details to your system instantly, enabling automated updates or notifications.
Benefits of Webhooks
- Real-Time Notifications: Receive updates instantly without waiting or manually checking for changes.
- Resource Efficiency: Eliminate the need to repeatedly poll an API for updates, reducing unnecessary API calls and system load.
- Workflow Automation: Automate processes like updating databases, notifying users, or triggering downstream actions based on event data.
- Customizable: Design the receiving application to handle webhook data as per your business needs, making it highly flexible.
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