Tamil Nadu-born PepsiCo CEO Indra Nooyi, an IIM Calcutta graduate, on Monday announced she is stepping down from the role after 12 years. The 62-year-old did her masters from Yale University and worked at companies including Johnson & Johnson, Boston Consulting Group and Motorola, before joining PepsiCo. The company's sales grew 80% under Nooyi, who's stepping down on October 3.