The JSON Pointer is a standard defined by the Internet Engineering Task Force (IETF) under Request for Comments (RFC) 6901. The standard basically says that a JSON Pointer is a string that identifies a specific value in a JSON document.

Without a JSON Pointer, you would need to parse the whole message and iterate through it until you find the desired value—probably lots of if and else instances and things like that.

So, a JSON Pointer helps you to decrease the written code dramatically by doing this kind of operation very elegantly.