Only anecdotes, but I've had the opportunity to be responsible for the choice of language in some greenfield projects, usually relatively small line of business

Only anecdotes, but I've had the opportunity to be responsible for the choice of language in some greenfield projects, usually relatively small line of business applications. My choice is almost always nodejs, lately with TypeScript front ends and my most recent project using TypeScript on the node side too. The reasons for this choice (I've also worked with Ruby, Scala, C#, Java etc): * JavaScript developers are everywhere, it's an accessible language to learn with tons of libraries and a huge community * Nodejs is a simple and great general purpose backend platform that will get you really far for 95% of use cases. It scales well, has a simple concurrency model and simple deployment and ops tooling * Using same language on front end and back end reduces cognitive overhead. My biggest client at the moment uses C# on back end and TypeScript on front, and despite them both being very nice Microsoft languages there's still so many differences