Collaborate: VPN or Open Access?

Hey folks,

I‘m new in the HomeServer business. So I started with two little applications on my Proxmox: paperless and do most

In the next time I’ll start a little project to collaborate more. Current I connect to my HomeServer with VPN. But if other people start connecting to my instance it would be useful to get an other secure system.

What is the way you prefer to give other people like your fam or friends access to your services (e. g. nextcloud)?

Thanks for helping an newbie!