Every Fission App gets a free subdomain.
Currently, these look like
YOURUSERNAME.fission.name, but we're migrating to user accounts and attached apps, where every app has
To use a custom domain of your own, like
YOURAPPDOMAIN.com, you need to make some changes to DNS. There are two methods detailed in the following pages:
Fission Hosted DNS - move your nameservers to Fission, we automate everything
Control your own DNS - create a CNAME and TXT record and point them at Fission services