The success of a company is heavily reliant on the marketing strategy it employs. A well-crafted business marketing strategy plays a crucial role in fostering growth and expanding the customer base of the company. Various marketing strategies, such as promotions, advertising, media relations, and other components, can be utilized to achieve these objectives. Even if a company offers top-notch products and services, it is imperative that consumers are informed about them. This dissemination of information not only educates consumers but also raises awareness about the company. Furthermore, a marketing strategy aids in enhancing a company's reputation, thereby fostering greater trust among consumers. Functional strategy holds significance not only for individual functions but also for the organization as a whole. When functional strategies are aligned and integrated, they generate a potent synergy that propels the business forward. Each function plays a role in creating value and establishing a competitive advantage for the business, while also collaborating and coordinating with other functions to ensure coherence and uniformity. Functional strategy serves as the cornerstone of organizational excellence. This thesis contributes to the treatment of the topic in a theoretical and empirical sense. More precisely, the graduation thesis points out the importance of applying a functional strategy in the development of a company, as well as the attitudes of the employees of the MPG d.o.o. marketing agency and Envy d.o.o. marketing agency on the importance of marketing strategy in company development.