"As your business grows, your network needs to grow with it. Many SMBs still rely on a peer-to-peer network--consisting of a few computers cobbled together to share a printer or an Internet connection. But this arrangement is less than efficient because you have to administer each computer individually, and you can't stretch the network much beyond 10 computers.
"If you want a more sophisticated setup that requires a local area network (LAN) built around a server. And that's where one of two things can happen--costs soar due to server licensing and the need to hire someone to look after the growing IT burden, or you give up in disgust and revert to walking the corridors with floppies..."