IIS, short for Internet Information Services, is a handy tool developed by Microsoft Corporation that provides essential internet services on Microsoft Windows operating systems. Originally presented as an optional package for Windows NT, it later became an integral part of Windows 2000, Windows XP Professional, and Windows Server 2003. However, it is worth mentioning that IIS is not available on Windows XP Home edition.

IIS serves as a comprehensive web service component, encompassing a web server, FTP server, NNTP server, and SMTP server. These servers facilitate web browsing, file transfer, news services, and email delivery, making the process of publishing information on networks, whether it is the internet or a local area network, effortless.