The bacalar thesis deals with analysis of marketing mix in selected company. In this essay I focused on processing the issue in the company DTnet Detva, s. r. o. The company specializes in the service sector, more specifically in providing telecommunication and internet services. The main purpose of the bacalar thesis was to analyze the tools of the company marketing mix. Final analysis of the competition revealed the position of the company DTnet Detva, s. r. o., compared to selected companies. We found out that the company offers quality services at affordable prices and is constantly adjusting marketing mix to meet customer requirements. The disadvantage of the company is the existence of influential competition but company is able to compete with them. Based on the information obtained we finally concluded that the company has perspective of an effective acting in the future.