Tracking is one of the most important parts of the affiliate marketing. It makes both the affiliate partner and the merchant satisfied. In order to ensure a fair partnership, the tracking process needs to be done properly. Thats why many people decide to use the Postback URL. If youre not familiar with the term Postback URL, it might be because many marketers use other terms for that. For example, Postback URL is basically the same as CallBack, WebHook, server to server tracking, conversion, etc. All of these terms refer to the process of getting notified about a conversion event via a third-party server.