Webhooks are HTTP callbacks you can set up to receive new form results. Where our API gives you a way to "ask" for your form's results, webhooks give you a way to be "told" each time there's a new one. This saves time and processing because you'll receive each new result in real time, rather than periodically polling to see if there's anything new yet.
You can use Server Post integration to create custom HTTP POST webhooks for your forms.
An additional way to utilize webhooks is with Zapier integration. Your forms can integrate with Zapier which itself integrates with thousands of other services. They also provide a way to integrate with remote MySQL databases.