Debian vs Ubuntu: real differences and which one to choose for your server

Published on 2026-10-19 by frfrand

Debian o Ubuntu para un servidor: estabilidad, paquetes, soporte, seguridad y administración. Comparación con ejemplos y criterios para elegir.

Debian and Ubuntu are two Linux distributions, that is, systems that combine the Linux kernel with programs, tools, and an update mechanism. Both are used to host websites, databases, and applications. And yes, Ubuntu is based on Debian. The difference is how each one prepares and maintains that set, not that one has a "real" Linux and the other doesn't.

If you are about to hire a server and the panel asks you to choose between Debian and Ubuntu, the answer depends more on the project and on who will maintain it than on a supposed speed competition.

First, why do both exist?

Debian was born as a community distribution, developed by collaborators and organized around a commitment to free software. Ubuntu appeared later, taking work from the Debian ecosystem and adding its own repositories, release cycles, packaging decisions, and Canonical support.

Think of it as two kitchens that start from similar ingredients but prepare different menus. Sharing a base does not mean they publish the same program versions on the same day.

The big difference: how updates arrive

Debian Stable prioritizes a relatively predictable base throughout the life of each version. Major versions of many packages change less; important security patches continue to arrive through distribution maintenance. This can be attractive on servers that need to run for years with few unexpected changes.

Ubuntu has regular releases and LTS versions —long-term support— every two years. LTS versions are a frequent choice for servers because their support cycle is well defined. Ubuntu Pro and extended maintenance for certain packages and periods also exist.

Beware of a common mistake: stable does not mean without updates. A system that stops receiving patches because someone forgot to update it is not more stable; it is more vulnerable.

Do they use the same commands?

In common tasks, they are very similar. In both you will find tools like apt, systemctl, ssh and much of the Linux ecosystem.

For example, installing Nginx from repositories can start in both with:

sudo apt update
sudo apt install nginx

But the available package and its version may vary depending on the edition and configured repositories. It is not advisable to copy instructions from one distribution to another without checking what version you are using.

Which consumes fewer resources?

You often hear “Debian consumes less” as if it were a physical law. It isn’t. A minimal Debian installation and a minimal Ubuntu Server installation, running the same services, can have quite similar requirements.

What really weighs is what you installed and left running: the database, the web server, the workers, monitoring, or a graphical desktop you didn’t even need.

If your website requires 4 GB of RAM and many expensive queries, changing distribution won’t turn it into a lightweight application.

Example 1: an API with Django or Node.js

Imagine you develop an API and want to run it with PostgreSQL and Nginx. Both Debian and Ubuntu are valid options.

What matters is checking the supported versions of Python or Node.js, of the database system, and of the libraries your project uses. If you work with containers, you must also verify host compatibility and container maintenance.

Choosing the distro your team masters can reduce more errors than chasing minimal performance differences.

Example 2: a company server that must not fail

On a server hosting a tool used every day, what matters is the update policy, internal documentation, backups, monitoring, and the procedure to move to the next version.

Debian Stable can fit very well if you prioritize a conservative base. Ubuntu LTS too, especially if you need packages, images, or support covered by providers that work specifically with Ubuntu.

No choice eliminates the need for maintenance.

Which is more secure?

Both distributions have security processes. Real security depends on using a supported version, applying patches, limiting permissions, and configuring services correctly.

An updated Ubuntu with protected SSH can be more secure than an abandoned Debian, and vice versa. It is not serious to choose an operating system just for the "more secure" label.

Debian or Ubuntu: how to decide without complicating yourself

Choose Debian Stable if you value its community organization, its conservative approach, and you know its packages and maintenance procedures.

Choose Ubuntu LTS if your team is comfortable with Ubuntu, your software recommends it, or you need its cycle and support modalities.

In both cases: check requirements, test the deployment, keep backups, and document how to update or recover the application. That has more impact than the rivalry between distributions.

And in ArduMaker?

When deploying applications in Linux environments managed from ArduMaker, system versions, dependencies, and maintenance still matter. The platform can facilitate operations, but it does not turn an unsupported distribution into a good choice. In our article about Ubuntu we explain the basic concepts.

In summary: Debian and Ubuntu share a very close technical base. For a real server, choose based on compatibility, support, and maintenance capacity, not on myths.

Official sources: Debian Versions · Ubuntu Publications and Support · Package Management in Debian.