" Within most well-established companies is a core of uniqueness. It is identified by answering questions such as the following: • Which of our product or service varieties are the most distinctive? • Which of our product or service varieties are the most profitable? • Which of our customers are the most satisfied? • Which customers, channels, or purchase occasions are the most profitable? • Which of the activities in our value chain are the most different and effective? Around "

― Michael E. Porter , HBR's 10 Must Reads on Strategy (including featured article “What Is Strategy?” by Michael E. Porter)