Webhook
3 min read
Definition
A webhook is an automated HTTP callback that sends real-time data from one application to another when a specific event occurs. Unlike APIs which require you to poll for data, webhooks push data to you instantly, making them event-driven and highly efficient.
How It Works
1
Event occurs
A user submits a form on WittyForm.
2
Payload created
The form data is packaged as a JSON payload.
3
HTTP POST sent
The payload is sent to your configured URL endpoint.
4
Your server processes
Your application receives the data and takes action (save to DB, send email, update CRM, etc.).
POST https://your-app.com/api/form-webhook
Content-Type: application/json
{"formId": "abc123", "email": "[email protected]", "name": "Jane Doe"}
Why It Matters for Forms and Surveys
- Instant notifications: get alerted the moment a form is submitted.
- CRM integration: push new leads directly to Salesforce, HubSpot, or your custom system.
- Workflow automation: trigger email sequences, Slack messages, or task creation automatically.
- Data sync: keep your database in real-time sync with form submissions.
- No polling overhead: webhooks are more efficient than repeatedly checking for new submissions.
Webhook vs. API
| Aspect | Webhook | API |
|---|---|---|
| Direction | Push (server sends to you) | Pull (you request from server) |
| Trigger | Event-driven (automatic) | Request-driven (manual/scheduled) |
| Real-time | Yes, instant | Depends on polling frequency |
| Best for | Notifications, syncing | Querying, bulk operations |
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