If you want to be „close” to AWS but still save money, try spinning lightsail instances that act as media proxies, similarly with other more resource generous providers. You could shift majority of media traffic off AWS and keep the “signalling” just there.

AWS will jack you, be careful. Those credits get used up, free/cheap quota used, services grind to a halt and somehow you owe $500 after a week.

I mean.. you just have to pay attention. And maybe think about making a pricing page.

Personally I love the idea, especially 3D and programmability.