If you develop any ASP.NET MVC 3 application (which currently is in RC 2 release) with Razor view engine and you need to run it on Windows Azure then you have to upload some extra DLLs to the cloud. Below is a list of DLLs you need to have as local copies to get ASP.NET MVC 3 run in Windows Azure web role.
You may have noticed that there are some cool helpers in WebMatrix that you may want to use in your current ASP.NET MVC 3 project. The good thing is that you can use them. The only thing you have to do is just download them with NuGet.
Most of us use third-party libraries when developing a web project, so you can easily understand how difficult is sometimes to find the latest version of the library you need, keep it updated or even uninstall it easily without having to spend two hours in order to remove dependencies and delete unnecessary code. If these are your needs then you should check NuGet.