A good introductory overview: Jonas Boner on Resilience <a href="https://www.youtube.com/watch?v=NjPVJ7ZKLnY" rel="nofollow">https://www.youtube.com/watch?v=NjPVJ7ZKLnY</a>
That was the motivating case for Erlang. However, most problem domains don't require the same levels of availability and fault tolerance as telephone switching.