I don't know. It's definitely not displacing huge amounts of performance-critical Java or .NET yet, but it seems to be gaining inroads in the Real World from wh

I don't know. It's definitely not displacing huge amounts of performance-critical Java or .NET yet, but it seems to be gaining inroads in the Real World from where I sit. I think your average corporate developer is just trying to earn a paycheck and also has a petrified fear of meaningfully learning/using more than one language. Telling him "use this and you can use JavaScript everywhere!" sounds like a big difficulty improvement to him, especially since JavaScript is something he "already knows" and has been familiarized through years of being the exclusive client-side development platform. Since this type of dev cares only about keeping his career on cruise control until retirement, Node.js is engaged with enthusiasm. In fact, it's one of the most enthusiastic receptions by BigCo devs that I've seen.