I wanted to know if there were any specific technical reasons why large enterprises do not use subdomains to identify their CDNs.
I spent a fair amount of time carefully wording my question and researching various SE sites to try and find one which best suited my question.
I looked at Webmasters, but it seemed more focused on web hosting services, CMSes, and such. I considered posting it on Network Engineering, but that seemed to be more focused on hardware and architecture. After carefully reviewing the tags and history of questions on various sites, I figured Serverfault seemed like the best match to what I was asking.
The question started to get answers, then was summarily closed as off-topic, with a stupid default suggestion that I ask it on Stackexchange or Superuser, (which I of course ignored.)
Why is this off-topic, where would it be on-topic, and why is the boilerplate reason given for closing it so useless?