McDonald's started in 1940 and has grown to become the world's largest restaurant chain, serving over 68 million customers daily in over 120 countries. Key to its success has been maintaining quality, catering to all customer types, and tailoring products to local tastes. McDonald's faces risks from health-conscious consumers shifting to healthier options and from competitors offering more customization. The document discusses McDonald's history and growth, current performance, marketing strategy, and potential future risks.