Wireguard is one way to secure your connection to another machine. That machine could be a "VPN server" - which typically mean one of two things:
1) By connecting to that server, you get access to private resources as if you were on the same network. Say, access to a printer, a web camera or a file server that aren't exposed to the Internet.
2) You gain access to the Internet through that server, so that your publically visible IP changes. This prevents anyone between you and the server to see the content of your traffic (eg: your isp, the hotel it staff that runs your free wifi). It can also grant you access to resources that are exposed to the internet - but filter access based on IP. Such as a CRM system, or webmail system.
If you are connecting to a VPN server, then, by definition (virtual private network) - your connection should be secure. Wireguard is one way in which that access can be secured - and it's new/modern, simple and widely regarded as following best practices. Alternatives are ipsec via eg strongswan, OpenVPN and a bunch of nasty proprietary solutions constructed out of mixes of libssl and obscure hedge magic.
1) By connecting to that server, you get access to private resources as if you were on the same network. Say, access to a printer, a web camera or a file server that aren't exposed to the Internet.
2) You gain access to the Internet through that server, so that your publically visible IP changes. This prevents anyone between you and the server to see the content of your traffic (eg: your isp, the hotel it staff that runs your free wifi). It can also grant you access to resources that are exposed to the internet - but filter access based on IP. Such as a CRM system, or webmail system.
If you are connecting to a VPN server, then, by definition (virtual private network) - your connection should be secure. Wireguard is one way in which that access can be secured - and it's new/modern, simple and widely regarded as following best practices. Alternatives are ipsec via eg strongswan, OpenVPN and a bunch of nasty proprietary solutions constructed out of mixes of libssl and obscure hedge magic.