Why internet connection sharing is important?

Here, if Internet connection sharing (ICS)  is configured withn a network ,when a request to the internet is made, the Internet connection sharing (ICS) host computer connects to the ISP(Internet service provider) and creates the connection

So that other computers can reach a specified Web address or download e-mail. That’s why we can say this metrology allows to connect computers of a network to the Internet using , one connection. So there can be identify internet connection between two or more computers. This provide cost efficiency way. While considering all these things we can identify the importance of Internet connection sharing (ICS)