Machine.config: This will automatically be installed in Visual studio.
- This is the machine level configuration file
- Every Visual studio version must be having one file only
- Machine.config file is for all applications in IIS
Web.config: Each application directory is having one web.config file and directories with in the application can also have web.config files.
- Web.config is overridden to machine.config file
- web.config is application/folder level configuration file