I can spill all the juicy details as the main author and instigator.
Cyanview reached out to me to help find a dev a while back. Hearing about their customers I knew it would be a decently big splash for Elixir. I was surprised that they were unknown and had this succcess with big household name clients.
I like them. I like their whole deal. Small team, punching above their weight. Hardware, software, FPGAs and live broadcasts. The story has so much to it. David and team have been great sports in sharing their story.
Fundamentally I care more about Elixir adoption though, I reached out to the Elixir team and offered to interview them and write something up.
A case study about successful Elixir production deployments is definitely content marketing. But for Elixir. It is a very common question when mentioning a less common language. "Who uses this?" I thought it was a very interesting case. Glad to have it documented. The style of a case study won't suit everyone.
I suppose "without any marketing, before _this_" would have been funny.