THEY’RE THE ICONS and infuencers who make up this year’s definitive ranking of the most powerful women in the world. There are nearly 20 new faces in 2015—some still mostly unknown but already enormously successful, all of whom are remaking the landscape of finance, technology, entertainment, philanthropy, business and more. The difference between this diverse group and our inaugural class in 2004 (which was heavier with politicians and big fortunes) is dramatic—a result of the tidal force of technology in recent years and a new order less refective of raw politics and great wealth than of global impact and reach.