Might want to do a little research. Azure is not platformed on Linux.
I was going by the final sentence in the Register article:
"However, as its continued love-in with Linux continues (heck, a large chunk of Azure is running the OS),..."Are you saying El Reg needs to do some research?
The only for-sure knowledge I have is a few years old, when the Windows Update server network overloaded, went down in flames, and was switched over to Akamai's CDN, which was understood at that time to be Linux-based -- that irony generated a lot of snickering from the Linux folks here and elsewhere.
Microsoft still offers Akamai as one of its Azure CDN options, AFAIK. I rather doubt that it's being done with Windows Server instances, but whether it's Linux per-se, or some *IX variant that Akamai has developed and customized, I don't know.