IIS
Internet Information Services is an extensible web server created by Microsoft for use with the Windows NT family. IIS supports HTTP, HTTP/2, HTTPS, FTP, FTPS, SMTP and NNTP.
-- Wikipedia
General information
ASP.NET Web Project File Types
File Types Managed by ASP.NET
.txt
.asax
.ascx
.ashx
.asmx
.aspx
.axd
.browser
.cd
.compile
.config
.cs
.vb
.csproj
.vbproj
.disco
.vsdisco
.dsdgm
.dsprototype
.dll
.licx
.webinfo
.master
.mdb
.ldb
.mdf
.msgx
.svc
.resources
.resx
.sdm
.sdmDocument
.sitemap
.skin
.sln
.soap
File Types Managed by IIS
.asa
.cdx
.cer
.idc
.shtm
.shtml
.stm
Static File Types
.css
.htm
.html
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