ASP.NET as well as .NET applications have one more excellent feature, ASP.NET uses a flexible configuration management system that keeps the application configuration separate from application code. ASP.NET configuration is stored in XML files with the .config extension, which makes it easy for users to change it before, during and after deployment.

The configuration file we all are aware of is the web.config file found in the application root, which when added has almost very simple configurations. But guess what that is not the only configuration file that your ASP.NET application relies on, there are other config files that your application inherit that configuration by default, next I will show the Configuration Hierarchy in ASP.NET. More...