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Re:Functional Programming at Facebook by incepted on Friday February 26, 2016 @09:40AM (#11181568)
Erlang is mentioned only once in this entire article, and it's in the "See also" section. Nothing in this Wikipedia article supports the claim that Ericsson uses Erlang at all.
Re:Functional Programming at Facebook by mhotchen on Friday February 26, 2016 @03:28PM (#11183973)
Sorry, you're right. I was more indicating at the fact that they power a huge amount of the infrastructure of mobile and telecoms.

Here's some sources that indicate that Erlang is still in daily use at Ericsson:

http://www.ericsson.com/ericsson/corpinfo/publications/revie...

http://www.ericsson.com/news/141204-inside-erlang-creator-jo...

I'm sorry I can't find the exact video I saw from Joe, but he's generally quite proud of the reach of Erlang so you'll find him stating the facts about how much of the mobile and telecoms infrastructure it supports in a few of his videos! I hope that helps.