Using Kudu to Access Azure Website Extensions

There’s a little-known but excellent feature of Azure web apps that makes it easy to access the debugging and development extensions of your Azure website. If you navigate directly to (replace “your_site” with the real name of your web site) you will find Microsoft’s Kudu service – the engine behind git deployments for Azure web sites.

There’s tons of useful  information you can see using this tool, such as process information, environment variables, server variables and a lot more.

More importantly, it’s also a portal to easily install and access site extensions, such as Visual Studio Online (which you can use to edit files in place on your web site).

For example, to access Visual Studio Online, select the ‘Site Extensions’ menu. There you will find listed all the available site extensions. The first should be VSO. You will need to enable it first, which requires a website restart, but once done, you can access VSO anytime using the following URL format:

There are a lot more tools available through Kudu, and exhaustive documentation is available on their wiki:

Kudu is a fantastic tool for development and debugging of your Azure web sites.

For everyday management and monitoring of a web site, the new Azure Portal is a great tool, but to easily access tools and information that are useful to a development team, Kudu is far more powerful.


Building it in the Cloud – Part 3


Now that we have a web app in azure, and have connected it to Visual Studio Online in the earlier posts (part 1 and part 2), it’s time to finish up this little project by checking out how the build and deployment pipeline works.

 Continuous Integration

Log into the Visual Studio Online account linked to you Azure subscription, and go to to our project, which should be available from the dashboard. Once you click on the project name, go to the ‘BUILD’ tab.


You can see the build definition created for you when the web app was linked to Visual Studio Online. You can also go to the ‘CODE’ tab to confirm that all your project files have been committed to Visual Studio Online’s Git repository.

Once that’s confirmed, we need to test the integration with our development environment. For that, let’s go back to Visual Studio 2013, open the project, and make a change. I’ve added an extra value to the Values Controller class.


Now we need to commit our changes to the local repository, and sync to Visual Studio Online.


If everything worked correctly, we should shortly see our changes on the production site, and our source code in Visual Studio Online. Let’s log back into Visual Studio Online, and check to see what has occurred after committing our changes.


First, in the ‘CODE’ tab, we can see that our changes were synced to the remote repository – the “value3” change is visible in the code explorer view.


Next, let’s check the ‘BUILD’ tab. Sure enough, there’s a new build there created a minute ago – it has a green tick, so the code was successfully compiled on the hosted build server.

Great, just a couple more things – let’s check the build logs, by right-clicking the build, and selecting ‘Open’.


And finally, we need to open our web site, go to the values API, and confirm that the changes are successfully deployed to production.



This series of articles has barely scratched the surface of the capabilities in Visual Studio Online. The next step is to schedule automated tests, set up deployment slots, and customize the build process.

However, I hope this brief look at Visual Studio Online’s features is enough to encourage you to look further.