Minimal Ubuntu optimized for automated use at scale, with a tiny package set and minimal security cross-section.

It is designed for completely automated operations, with none of the usual human-friendly utilities for comfortable interactive usage. Editors, documentation, locales and other user-oriented features of Ubuntu Server have been removed. What remains are only the vital components of the boot sequence. Images still contain ssh, apt and snapd so you can connect and install any package you're missing. The unminimize tool lets you 'rehydrate' your image into a familiar Ubuntu server package set, suitable for command line interaction.

Ubuntu is free and will always be, and you have the option to get support and Landscape from Canonical.