What are the diferences between server and workstation on Fedora?

The difference is in the packages that are installed.

• Fedora Workstation installs a graphical X Windows environment (GNOME) and office suites.

• Fedora Server installs no graphical environment (useless in a server) and provides installation of DNS, mailserver, webserver, etc.

• Fedora Atomic is designed around Kubernetes and containers.