The Gartner Magic Quadrant ranks cloud vendors on two criteria: Ability to Execute and Completeness of Vision.
Execution is represented on the Y-axis of Gartner's chart, and vision on the X-axis. That lands competitors into one of four quadrants on the chart: Niche Players (low in both criteria), Visionaries (complete vision but lacking execution), Challengers (good execution but lacking vision), and Leaders (excelling in both vision and execution).
Among the 10 providers evaluated this year, all but three were relegated to Niche Player status. Amazon Web Services and Microsoft, once again, were the only providers in the Leaders quadrant, and Google had the Visionaries quadrant all to itself.