Out of fashion. But I've worked in two startups, one sold for $600M and one sold for $200M and both were Java based (The startup I co-founded used Scala (never

Out of fashion. But I've worked in two startups, one sold for $600M and one sold for $200M and both were Java based (The startup I co-founded used Scala (never again ;-) on the JVM eco system and was also successfully sold, though for less than $200M) Technologies come and go (and sometimes come back like Python). When I started Java in the 90s it was replacing often Perl on the server, as the first apps were writen by Unix admins who used Perl, which went out of fashion.