A great Essay written by Tomas Jon Pfister covering some of the factors involved when switching between webhosting operating systems.
Some of the categories covered include :
a) labour costs: possible changes in time required for maintenance as a result of more/less stable software, complexer/simpler systems, ease/difficulty of administration, more/less documentation, better/worse commercial or free support, and more/less freedom to modify the software according to the needs of the company;
b) licence fees: more/less licence fees required not only for the operating system, but other
commercial software necessary to satisfy the customers’ diversified software support needs;
c) life span of the servers and software: constant need of expensive, time-consuming upgrades of
both hardware and software in order to keep the systems secure and the quality of service high;
d) customer happiness: does the use of a specific operating system enhance the quality of service,
including uptime and usability.
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