[pessimizer]

Whatsapp took over the world running on Erlang/BEAM, with barely any servers and a few engineers. I honestly don't know what could be a better success story than that, but Discord has also done pretty well. The BEAM + Rust combination is looking scarily effective right now.

[ch4s3]

I'd be willing to accept the argument that Whatsapp happened to have assembled an uncommonly good team, but it is a signal.

Yeah the BEAM with some Rust NIFs is a great combo. I'd definitely consider it in the future for many types of problems and anything involving a HTTP or GraphQL interface.