The quality system is the basis of the business strategy that should be carried out in every modern company. Due to changes in the market, changes in customer requirements and increasing competition, quality is something that guarantees the success of the company and positioning of the competition. The quality system is based on an efficient internal communication. Internal communication is one that is carried out within the company. Internal communications conducted managers at all levels to devise and implement a business strategy, and employees who have to make certain business tasks in order to achieve quality score. To prove a certain level of quality, contemporary company introduced certified quality systems on the basis of which receive the trust of customers. Certified quality systems are the foundation of business in international markets. The business foundation of modern companies is efficient management, which examines trends in the market and accordingly designed and implemented business strategy. Management should be focused on customers and other stakeholders, and the business strategy of the company. In order to achieve business excellence, it is necessary to carry out continuous and effective internal communications.