The chart, created using Google News Timeline, trends the growing interest in "network visibility" from 1990 to 2008. The dot-com bubble (2000) shows up as a clear spike, followed by a plateau. Starting in 2005 interest has accelerated with strong annual gains.
The sFlow standard, designed to provide network-wide visibility, was introduced in 2002 and the rapid growth in multi-vendor support for sFlow closely tracks this chart.
Finally, current trends toward data center convergence and virtualization create new management challenges that continue to drive interest in the visibility and control made possible by sFlow.
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