An Application Programming Interface (API) is a request-based way of data transfer. Depending on the interval set, it sends data between apps programmatically.
Webhook is an event-based way of data transfer. Meaning that whenever your form is submitted, you will be notified in real-time. Webhooks are predefined and do not require programmers to make requests every time you want an update on external systems.
Dive into our developer portal to create custom integrations with third party apps. You can also get real-time HTTP POST notifications when a form is submitted using webhooks.