What is the IIS Service ?

Internet Information Services (IIS, formerly Internet Information Server) is an extensible web server created by Microsoft for use with the Windows NT family. IISsupports HTTP, HTTPS, FTP, FTPS, SMTP and NNTP.

You can stop IIS when you want to stop the web server from serving content, such as when you upgrade applications. To stop the web server, you must stop the Windows Process Activation Service (WAS) and the World Wide Web Publishing Service (W3SVC). You can then start the web server when you are ready for the web server to serve content again.

IIS is an Internet  Information Service by Microsoft.We can Host Web application And we can Access it from world Wide

It is Internet Information Service provided by microsoft..,it gives web based access to users

Internet Information Services (IIS), formerly known as Internet Information Server, is a web server producted by Microsoft. IIS is used with Microsoft Windows OSs and is the Microsoft-centric competition to Apache, the most popular webserver used with Unix/Linux-based systems.