I can self host many applications, but their security must be outsourced to a company. I don’t have time to keep on top of vulnerabilities. Cloudflare Tunnels is a step in the right direction, but it’s not end to end encrypted. The question is then, how to secure self hosted apps with minimal configuration, in a way that is almost bulletproof?
If the software you host constantly has vulnerabilities and something like apt install unattended-upgrades doesn't resolve them, maybe the software simply isn't fit for hosting no matter what team you put on it. That hired team might as well just spend some time making it secure rather than "keeping on top of vulnerabilities"