Web.config
is the main settings and configuration file for an ASP.NET web application. The file is an XML document that defines configuration information regarding the web application. The
web.config
file contains information that control module loading, security configuration, session state configuration, and application language and compilation settings.
Web.config
files can also contain application specific items such as database connection strings.
Take a look at given links for more details
The ASP.NET Web.config File Demystified Article[
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