It is possible. You'll have to manage space specific permission. There is this guide here that can instruct you on how to do that: https://confluence.atlassian.com/display/DOC/Setting+Up+Public+Access
"The relevant space permissions. If you want a space to be publicly accessible, the anonymous user must have at least the 'View Space' permission. To set space permissions, choose Browse > Space Admin > Permissions."
I hope that gives you a hint
You must enable Global Anonymous Access and then ensure the spaces you desire public to grant Anonymous Users View Permissions.
Hi team, I’m Avinoam, a product manager on Confluence Cloud, and today I’m really excited to let the Community know that all customers can now try out the new editing experience and see some of the ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs