See, it merely refers to how you can connect to a private network such as one set up by your company or educational intuitional so that you can access files remotely.
Much like the Windows 10 take on a VPN client, the Mac built-in VPN may confuse you. The Mac built-in VPN isn't actually a VPN service Read on and we'll tell you all about what's meant by the macOS built-in VPN. Much like its Microsoft counterpart, MacOS doesn't have a dedicated VPN service in the way you might be expecting, but it does have a built-in client that may be useful for some folks.