Azure Web Sites Development Stacks

.NET

• CLR: 2.0, 4.0
  The default is CLR 4.0.
• Framework: up to 4.6
  The default is .NET Framework 4.6 (currently .NET 4.6.0).
• ASP.NET 5 is also supported either through Kudu or Web Deploy

Node.js (and matching npm)

To get the full list of supported Node and npm:

• Go to https://[yoursite].scm.azurewebsites.net/
• Click on 'Runtime versions' under API

The default is Node.js 0.10.32.

PHP

• 5.4
• 5.5
• 5.6

The default is PHP 5.4.

Python

• 2.7
• 3.4

Java

• 1.7.0_51