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The Performance of Clouds

Cloud computing is a significant shift in the way companies build and run IT resources. It promises pay-­‐as-­‐you-­‐go economics and elastic capacity. Every major change in IT forces IT professionals to “rebalance” their application strategy—just look at client-­‐server computing, the web, or mobile devices. Today, cloud computing is prompting a similar reconsidering of IT strategy. But it’s still early days for clouds. Many enterprises are skeptical of on-­‐ demand computing, because it forces them to relinquish control over the underlying networks and architectures... Continued

The Road to SaaS

Since the dawn of computing, there has always been a tension between centralized computing and computing at the edge. Mainframes were centrally managed, but as processing became cheaper; they gave way to minicomputers and servers.  One reason for this was the high cost of bandwidth—as Microsoft’s Jim Gray once remarked, “compared to the cost of moving bits around, everything else is free.” So companies ran those servers near end users. This proximity came at a cost, however. The companies bought packaged software, which they tailored to their own needs and ran themselves. That caused... Continued