Technology growth is exponential. We all know about Moore’s Law by which the density of transistors on a chip doubles every two years; but there is also Watts Humphrey’s comment that the size of software doubles every two years, Nielsen’s Law by which Internet bandwidth available to users doubles every two years, and many others concerning storage, computing speed, and power consumption in a data center. IT organizations and especially IT operations must cope with this afflux of technology, which brings more and more services to the business, as well as the management of the legacy services and technology. I believe that the two most important roadblocks that prevent IT from optimizing its costs are in fact diversity and complexity. Cloud computing, whether SaaS or IaaS, is going to add diversity and complexity, as is virtualization in its current form. This is illustrated by the following chart, which compiles answers to the question: “Approximately how many physical servers with the following processor types does your firm operate that you know about?”
If virtualization could potentially address the number of servers in each category, it does not address the diversity of servers, nor does it address the complexity of services running on these diverse technologies.