The Boston Consulting Group (BCG) is an American multinational management consulting firm with 90 offices in 50 countries.The firm advises clients in the private, public, and not-for-profit sectors around the world, including more than two-thirds of the Fortune 500 and is one of the 'Big Three' strategy consulting firms (MBB). Specialties in Consumer insight, corporate development, corporate finance, digital economy, globalization, growth, information technology, innovation, marketing & sales, operations, people & organization.