"Some organizations rely heavily on Linux. Sean McAdam of Frederick Communications in Frederick, Md., runs a local ISP and consulting service. Like many ISPs, McAdam uses Linux extensively. How extensively? 'Firewall, DNS, Email, Web mail, Web hosting, network administration, network monitoring, diagnostics, [and] desktop,' says McAdam.
"In other companies, the use of Linux is focused on server functions. For example, Arkeia is a company that sells its backup products on a number of platforms, including Linux. But, like any other company, it has built its own internal infrastructure to support its business. What role does Linux play internally? 'Everything which is not pure desktop is under Linux or under UNIX,' says Philippe Roussel, CEO of Arkeia. 'We have a couple of Sun machines, some HP-UX. We have a couple of Windows servers. Everything else is Linux-based.' And some of those boxes are definitely critical to the business. 'We have decided to remove our Windows server, which was used for [Microsoft] Exchange, and to transfer that to a Linux box with SuSE [Openexchange Server],' he explains..."
