Tata Sons is the investment holding company of the Tata group. The Tata group comprises over 100 operating companies in seven business sectors: communications and information technology (IT), engineering, materials, services, energy, consumer products and chemicals. The group has operations in more than 100 countries across six continents, and its companies export products and services to 150 countries. Total revenue was $107 billion in 2014-15, with 67% coming from business outside India. Tata companies employ over 600,000 people worldwide.