That work roster suggests why the Corporate Service Corps represents not only cutting-edge career training but also a major advance in the practice of corporate social responsibility. The latter has come a long way over the past 100 years. A century ago, businesses answered only to their shareholders, and philanthropy was a personal (and primarily financial) matter for wealthy industrialists and their companies. However, over the course of the twentieth century, the most enlightened corporations came to see developing responsible relationships with society as an important element of how they defined themselves. Today, engaging with society has increasingly become an essential part of doing business, woven into every decision about how the organization operates.