The above diagram illustrates a supplier focusing on the customer.
The supplier measures the customer satisfaction with a product, whether their product or a competitor's. They measure satisfaction with customer-support before product delivery, the product-delivery, the product itself, the customer-service after the delivery, and the customer-relations interactions during the entire cycle.
After measuring the satisfaction, they determine the quality and quantity of customer expectations, their requirements.
If the supplier can meet the expected product quality characteristics and quantities of the customer, they may choose to produce the product using their existing processes and structure.
If the supplier cannot meet the expected quality characteristics and quantities, they may choose to improve their product, and/or the production process capacity and capability, and/or the structure that creates or supports the production.
The supplier then provides their product, measures the customer satisfaction, and begins the process again.