Panels and software
Control panel
A web interface for sites, mail and databases on the server — no command line needed.
A control panel is installed on the VPS and lets you add sites, enable SSL, create mailboxes and databases with a mouse. The best known are ISPmanager, FastPanel, Hestia, cPanel and Plesk.
Some panels are free (FastPanel, Hestia), others are paid and sold by the provider as an add-on. If you are not a sysadmin, a plan with a panel makes life much easier.