As the other poster has mentioned, IBM has put a lot of effort into server-side swift. Also Google is investing in Swift for Tensorflow, which means there is a team at Google who's job it is to work on the Swift compiler every day.
edit:
If you want you can use Swift on Google Colab right now:
edit:
If you want you can use Swift on Google Colab right now:
https://colab.research.google.com/github/tensorflow/swift/bl...