Who would you say are leaders in the world of marketing

Who would you say are leaders in the world of marketing

Journal Entry #6: Now that you have discovered more about how advertising works, the mechanics of how organizations/businesses decided their marketing strategy. Who would you say are leaders in the world of marketing? What have you learned from them? How could you use that information or observations of their marketing strategies to become a better marketer? Write a minimum of three well-formed paragraphs.