Ansible Galaxy is the community hub for sharing Ansible Roles. Ansible Roles are pre-packaged, ready-to-run sysadmin tasks. Say, for example, you want to set up the Nginix web server on your Red Hat Enterprise Linux (RHEL), Fedora, or Ubuntu servers in a cloud. Instead of doing it by hand, you simply use the open-source Ansible Ngnix role. No fuss, no muss.