Marketing management occupies an increasingly important position in the business world, as well as in the sphere of electronic commerce. Some participants, however, underestimate the importance of this marketing support, which may be one of the major causes of the failure and inability of some companies operating on the Internet to grow. The aim of this paper is to develop an effective marketing management process model, which can significantly contribute to the increased competitiveness of companies operating on the Internet. The validity of this model is then applied on a Czech e-shop, which has long been one of the leaders of the Czech Internet market. To achieve the objective of this paper the current situation will be analysed, and sy...