3 minute read Yes, you read the title right. Hell is freezing because at Microsoft we have our own Linux distribution called Mariner or more exactly CBL-Mariner where CBL stands for Common Base Linux. First thing to understand about Mariner is that is not a general purpose Linux distribution like Ubuntu or Fedora, it was created by Microsoft’s Linux System Group which is the same team at Microsoft which created the Linux kernel used for Windows Subsystem for Linux version 2, or WSL2. The goal of Mariner is to be used as an internal Linux distribution for Microsoft’s engineering teams to build our cloud infrastructure and edge products and services.