e.g., if you're building an integration with any of the myriad of SaaS tools that fire webhooks, you can test in devlocal and have a URL of whatever.tunnel.com.
There are tools like ngrok and localtunnel that exist to do just this. I'm looking forward to replacing those with TS Funnels.
Or more realistically, if you are in web dev and wanted to show your work on your local machine - say when the CEO wants to 'check in and see how its going', you can just send them a link on slack and they can play with what your developing on.
can't the CEO just use the Tailscale network to access it privately?
I just don't personally see a use case -- if I need someone to access the content, the box it is on is already easy to publicly access. if it's not, the only people who need to see it are on the Tailscale network
edit: I think I'm starting to see it. it's not for long term installations. I just feel like, why not just open the box to the internet at that point.
it makes more sense for the edge case(s) that might address friction with adoption. interim solutions, or temporary connections
edit2: I can also see how this might be useful for people living under an oppressive government
How many CEOs you know gonna install a VPN client on their workstation to see your stuff?