How can a user access my Confluence project at no expense to me

[Masai Troutman]

I have a Confluence Space for a customer project.  How can the customer user group of 100s of users DISPLAY ONLY my Confluence content without me setting up an account and incurring billing?   

[Nic Brough -Adaptavist-]

You could make the space anonymously accessible, so that everyone on the internet can see it without logging in.

Or enable the "share page" function (which means people would have to be sent a link by one of your users, but doesn't need the recipient to have an account)