Microsoft has started referring to its CBL-Mariner distro as Azure Linux
While it came as a bit of a surprise when it first became public, it has been known for some time that Microsoft has its own Linux distro called CBL-Mariner. The name has been questioned by many, and it is in the process of changing.
The CBL-Mariner moniker is set to become a thing of the past as the distro transitions to being known as Azure Linux.