From what I hear, Node is getting a lot of love (all things considered) at Microsoft and especially at Azure.

If you look at http://www.windowsazure.com/en-us/downloads/

Azure supports (in varying degrees):

.NET, node.js, php, java, python, and ruby.

It also has CLI tools for linux and osx.

If you look into the Azure docs, you will see that many of the services have an XML definition that can certainly be implemented on differing platforms.

VS also appears to get some love including additional JS support, PVTS, etc.

And especially Drupal.