McDonald's was founded in 1940 as a barbecue restaurant and introduced its business as a hamburger stand in 1948 using production line principles. It now operates over 36,000 locations globally serving 68 million customers daily. McDonald's sells hamburgers, chicken, drinks and breakfast items. Over 80% of locations are franchised. Marketing includes television, radio, billboards and niche offerings. McDonald's has 420,000 employees and provides training, health benefits, and savings programs. While criticisms include unhealthiness and advertising, McDonald's continues its success through consumer focus, employee development and technological innovation.