In a production environment, there is typically significantly more investment make into infrastructure and tools, work is often shared between an engineering group and an operations group, and there are often economies of scale that I only hint at in this paper. There was a nice graph found in the slide deck Impliance: an Information Management Appliance by folks from IBM Research which captured how staffing costs have gone up in comparison to the cost of hardware for enterprise computing. James Hamilton has noted that in mega scale operations, human staff accounts for less than 10% of overall costs. There was a brief article in CIO which demonstrates what happens when you benchmark enterprises against service providers. I discuss some of these issues in my Hints for Operating High Quality Services. This post is primarily about classic enterprise IT staffing… what happens inside a company or a university where IS/IT solutions are delivered. While related, running a production service which is delivering software as service is quite a bit different from enterprise computing. The appropriate number of a staff depends on what the IT organization is responsible for and the level of service expected in each area of responsibility. “How many IT staff does an organization need?” is a commonly asked and difficult to answer question.
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