Microsoft Windows Intune is a web based management console which works with a cloud service hosted by Microsoft to allow IT administrator to manage the computers of the organisation they belong to for deployment, configure, secure and lot more.
Quick Overview of Windows Intune
Windows intune would require a monthly substitution for each PCs and can be accessed and manages from anywhere using a browser. The service is hosted by Microsoft under their infrastructure.
Read more -> http://www.microsoft.com/en-us/windows/windowsintune/explore.aspx