Remote system management.
Large corporations have thousands of personnel computers installed on the desks of their employees.
Apart from initial cost of hardware, software and training, these organizations spend significant amount of resources in administering and maintaining the desktop systems. Problems in computer system could be either due to hardware failures or due to software problems. The software problems can either be due to inexperienced user accidentally deleting files, trying to install software that cannot co-exist with other software package already installed, corrupted files, configuration information etc. To fix this problem the IT organization has to send a person to the site. It might take multiple visits to fix the problem.