[Ixiaus]

As always: depends on the use case.

We're using Erlang as the primary language environment for our IoT product for a lot of reasons but one big one is: Hot code loading and a very robust release upgrade environment with a lot of control over the process (including restarting everything inside the VM if that's what we wish to do).

For our product, a digital light switch / dimmer, high uptime guarantees is a very important requirement and Erlang has it all plus many other wonderful features.