It wouldn’t be Tableau Conference without the world’s ultimate data showdown—Iron Viz. Three fierce contestants took the keynote stage to rock day two with their mad data storytelling skills. The Iron Viz contenders had 20 nail-biting minutes to build an awe-inspiring visualization that would energize and electrify a panel of three viz-savvy judges and a massive live audience of data enthusiasts from across the globe. Which one reigned supreme? You’ll have to read on to find out.