⟩ Are VPNs used for specific kinds of applications or environments? If so, what are some examples of where and why VPNs would be deployed?
VPNs should be used for all information exchange. I don't want to have to "go encrypted" when something secret is about to be sent. I want everything to be encrypted. It should be as commonplace as people sending postal mail in sealed envelopes. It will also ensure that the VPN mechanism is working.