Internet Information Services (
IIS, formerly
Internet Information Server) is an extensible
web server created by
Microsoft for use with
Windows NT family. IIS supports
HTTP,
HTTPS,
FTP,
FTPS,
SMTP and
NNTP. It has been an integral part of the Windows NT family since
Windows NT 4.0, though it may be absent from some editions (e.g. Windows XP Home edition), and is not active by default.