in 2024, Azure Linux Platforms Group Program Manager Jack Aboutboul told me that 60% of Azure Marketplace offerings and more than 60% of virtual machine cores use Linux
From what I see above, mostly Linux.
Edit: Changed the link as the old one was a chatbot repost of the updated link.
There is also Microsoft Azure Linux https://github.com/microsoft/azurelinux
Imagine walking up to a Microsoft engineer and asking them what software their company’s servers run on
Microsoft’s been pretty open about using Linux for at least the past decade or so.
They kept building it into Windows which eventually resulted in WSL, largely because they use Linux servers but Windows workstations.
It was about 5 years ago that they publicly released Common Base Linux Mariner (now called Azure Linux).
Back when Microsoft acquired Hotmail, a horde of software specialists were tasked with porting this platform to Windows. After burning the one or other fortune on this project, they finally gave up. Hotmail kept running on Linux until they killed it.
Naturally, I could look it up, but what is Azure Linux?
Is it a fork of RHEL? Cloud Linux? FreeBSD?
Edit: Here it is.
In a similar approach to Fedora CoreOS, Azure Linux only has the basic packages needed to support and run containers. Common Linux tools are used to add packages and manage security updates. Updates are offered either as RPM packages or as complete disk images that can be deployed as needed. Using RPM allows adding custom packages to a base Azure Linux image to support additional features and services as needed. Notable features include an iptables-based firewall, support for signed updates, and a hardened kernel.
It’s definitely a form of Linux. Their own product Windows Server is just for small and medium businesses and mostly used for managing Windows devices (with Active Directory domain controllers) and various Windows application/terminal servers in an intranet scenario. It’s never really used for anything serious. Linux is basically the only relevant server OS these days, except for some specific use cases or specific preferences (I’ll count the *BSDs to that category).
Im not a windows fan but clearly its software was made and used at the large enterprise level. That being said many network things are way better to be doing with some form of unix and most busineeses are only going to do active director and office related stuff on windows.
probably a mix of azure linux, windows server and some other linux distros
Windows 3.1
I’d have to assume enterprise Linux, since they don’t use their own server OS (Windows Server).



