What's the point of this? I've tested it and it just sends a post request to an under-the-hood generated API endpoint. It does not allow me to do form validatio

What's the point of this? I've tested it and it just sends a post request to an under-the-hood generated API endpoint. It does not allow me to do form validations nicely, does not speed up anything as it's still just a POST request to an AWS Lambda function. And like how do I protect this generated endpoint? I just dont get this whole feature. Leerob maybe explain pls?