Peter Drucker Peter Ferdinand Drucker ( November 19, 1909 – November 11, 2005) was an Austrian-born American management consultant, educator, and author, whose writings contributed to the philosophical and practical foundations of the modern business corporation. He was also a leader in the development of management education, and he invented the concept known as management by objectives. So are you a Manager or a Leader ? And what do you WANT to be ? DO share !