How to test if my Gateway can communicate with aws server

I have an instance running healthily on AWS, so i need to write some form of a linux scrip which will be deployed on my gateway (router). This script has to test if the gateway can communicate with the instance. I have thought about using tools such as ping and traceroute but then i realized that as long as the gateway has internet connection, it will successfully ping the server.

So what approach can i implement to test that ?

Many Thanks