@d4klutz for the point of free, The AWS only provides 5g or 15g outward data pre month as I remembered . It definitely not enough for a VPN server. And if you exceed the free part, they will directly charge it from your credit card. It only cost 2-3$ pre month in my situation, But this kind of cost should be considered.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko