The topic of my bachelor thesis is Marketing strategy of the company A3 SPORT. The scope of my bachelor thesis is to describe the marketing strategy of the company A3 SPORT and to conduct own research in which I will test whether my hypothesis, that the sales service in the shops of company A3 SPORT is better than the sales service in the stores of company SPORTISIMO, is right. For my own research, I have chosen the method called Mystery shopping. In the theoretical part of the bachelor thesis I describe basic terms in the area of marketing, such as marketing itself, marketing strategy, communication mix or marketing research. In the practical part I provide information about the company itself, about its marketing strategy and about its ma...