Sheryl Sandberg is the Chief Operating Officer of Facebook. She graduated from Harvard University with degrees in economics and business and had a successful career as a management consultant and chief of staff to the United States Treasury Secretary before joining Google and later Facebook. As COO of Facebook, Sandberg oversees the company's business operations and was instrumental in helping Facebook become profitable through advertising. She authored the bestselling book "Lean In: Women, Work, and the Will to Lead" about women in leadership. Sandberg is recognized as one of the most powerful and influential women in business.