How do you set up an AWS site-to-site VPN connection?

VPNs have been floating around us since 1996, thanks to Gurdeep Singh-Pall (Microsoft Employee), who invented PPTP (peer-to-peer tunnelling protocol).

In the era of the cloud, VPN is a topic that is synonymous with tech enterprises and enthusiasts alike. Some of the honorary mentions include Google Cloud VPN, Azure VPN Gateway, and AWS Site to site VPN.