These vendors, large and small, are shaking up the status quo with their new products, approaches and models.
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Unlike most of the other vendors on this list, AMD is a large ($5.4 billion in revenue last year), established player. But few enterprise IT vendors shook up their sector like AMD did back in 2003 with its release of Opteron, creating a new category of 32/64-bit processors. That shot over Intel's bow led to a series of multicore chip battles between the two vendors and huge advances in server-processor performance.
Google in the Enterprise SurveyThere's no doubt Google has made headway into businesses: Just 28 percent discourage or ban use of its productivity products, and 69 percent cite Google Apps' good or excellent mobility. But progress could still stall: 59 percent of nonusers distrust the security of Google's cloud. Its data privacy is an open question, and 37 percent worry about integration.