The Business Case for Windows Server 2003, Part 1 and 2

Tom Bittman, lead Windows Server analyst at Gartner, told the E-Commerce Times that for some entities whose server requirements are simple, the improvements Microsoft has included in the new release might be overkill.
Although Microsoft’s new release can provide good ROI, most businesses cannot justify the upgrade without tying it to a routine hardware refresh. Enterprises typically replace their hardware every three to four years.