Hello Holger! Can you tell us some more about your specific needs? Feel free to email support@teams.discourse.com as well. If you are interested in enterprise hosting, we can make it work.
But as explained in How does Discourse for Teams relate to Discourse? - Docs - Discourse for Teams | Support, standard Discourse for Teams hosting is entirely private and requires login to access topics. At least for now, our focus is on customers seeking a tool for internal communication and for communication with vendors/customers who can log in as guests.
We may eventually add support for a feature like Page Publishing if there is sufficient demand for it. Page publishing lets you publish selected topics as pages that can be accessed without logging in. Would that serve your purpose?