App_Start Folder in ASP 4.5 only in WebApplications Projects?
There is nothing special about App_Start, it’s just a folder. What’s special is how it’s used, and that’s specific to the WebActivator framework, which is a NuGet package you can install. App_Start and WebActivator are not specific to .NET 4.5, but they do require .net 4 (which means VS 2010 or 2012) See http://blog.davidebbo.com/2011/02/appstart-folder-convention-for-nuget.html