Ratan Tata is the former chairman of Tata Group, one of India's largest conglomerates. He joined Tata in 1962 and became chairman in 1991. During his tenure, Tata Group expanded globally through strategic acquisitions and diversified into various sectors. Some of his major achievements include launching India's cheapest car Tata Nano, acquiring Jaguar Land Rover, Corus Steel and VSNL. He is credited with transforming Tata Group into a global brand. Ratan Tata stepped down as chairman in 2012 at age 75 but remains committed to the growth of the company through his leadership and vision. He is an internationally renowned business leader recognized for his business acumen and emphasis on ethics.