"Microsoft has developed its own Linux. Repeat. Microsoft has developed its own Linux"
theregister.co.uk/2015/09/18/microsoft_has_developed_its_own_linux_repeat_microsoft_has_developed_its_own_linux/
Sitting down? Nothing in your mouth?Microsoft has developed its own Linux distribution. And Azure runs it to do networking.
Redmond's revealed that it's built something called Azure Cloud Switch (ACS), describing it as “a cross-platform modular operating system for data center networking built on Linux” and “our foray into building our own software for running network devices like switches.”