Final answer:
Internal customers are concerned with product quality, delivery timeliness, and product cost, but not directly with external customer satisfaction, which is ultimately important but not their direct focus.
Step-by-step explanation:
The major concerns of the internal customer typically include factors like the quality of the product, timeliness of delivery, and cost of the product. These factors are critical in ensuring that the internal operations of a company run smoothly and effectively. Satisfaction of external customers, while ultimately important to the business, is not a direct concern of internal customers, whose focus is on the internal processes and supports within the organization. Providing excellent service to internal customers can enhance job satisfaction and open up new opportunities.