Given their release cycles, Debian is considered as a more stable distro compared to Ubuntu. This is because Debian (Stable) has fewer updates, it’s thoroughly tested, and it is actually stable. But, Debian being very stable comes at a cost.

Is Debian more secure than Ubuntu?

Ubuntu as server usages, I recommend you to use Debian if you wish to use it in the enterprise environment as Debian is more secure and stable. On the other hand, if you want all the latest software and use the server for personal purposes, use Ubuntu.

Which is better for server Debian or Ubuntu?

Ubuntu is a more secure system than Debian. Debian is considered a much stabler system and is much easier to manage than Ubuntu. In discussions on several platforms, Debian has a reputation for being more stable. There may also be a few vulnerabilities in an Ubuntu server that will not exist in a Debian server.