VPN (Virtual Private Network) is often more software or cloud based, and serves the purpose of providing privacy for your networks. This can be everything from hiding your IP address from sites looking for your exact location or ISP, to keeping internal communications systems private so any messages that hackers or unauthorized parties try to "intercept" will result in them not getting anything but encoded gibberish.
VPNs tend to be really focused on privacy and security via privacy. This can be used by a variety of different organizations, companies, or casual users to make sure that communications from one department to another can't be hacked, stolen, or viewed from the outside. This is where VPN becomes a crucial part of security, adding a layer of security to other software protections, especially when it comes to privacy issues.
A good VPN will make a huge difference when it comes to making sure all your communications are secure.
A VPN will allow you to: