What is a webhook?
Webhooks are the more advanced (developer) option for getting an update,
example: for our Custom Reward.
In layman's terms, you'd update your site and add a particular URL which responds to requests by doing -- whatever you wanted, really. It could create a new order, or write you a note about a customer, or send an email to your support team, or anything you can write some software to do. So the custom reward could be fulfilled automatically that way!
Then, you pass that URL to us as the "webhook" URL and whenever a customer claims that reward we send a request to that URL, so your software can do its thing.