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Sometime in the late 1980s, Peterson was reported to be the first CIO in a public company to earn a seven-figure salary.
More than most CIOs on this list, Paul Strassmann invites controversy.
CIO chooses the 12 most influential information technology executives of the past decade and the tools, techniques and systems that helped make them famous.
Feld says successful CIOs need to be "tough-minded optimists."