Virtual private network explained for the layman

Virtual private network  A VPN allows users to connect to a private network from anywhere through a secured tunnel. E.G working from home, you might set up a VPN to your office so that your traffic can not be snooped on and secrets stolen.
VPNs can also be used to link together two networks such as branch offices or a cloud network to head office.
The “Explainned series” is planned to build into a trustworthy collection of explanations and commentaries that can be trusted to tell the story straight without any bias and attempt to make the subjects accessible to the layman. The latter is not always easy as some of these terms refer to genuinely complex subject matter, while others are simply too vague to pin down (there’s another word for that).
If you want an answer on something and you can’t find it easily, please use the comments section to just ask and I will apreciate not having to research the next topic.