This bachelor thesis deals with the calculation of the return on investment into selected acquisition channels in a business company in a predefined period. To find out some data needed for the calculation, Google Analytics was used. The first part of the thesis is focused on selected types of Internet marketing. The next part introduces the Google Analytics tool, especially the process of its operation. The last part deals with the introduction of a selected company, its market position, the calculation of the return on investment in selected acquisition channels, and with the comparison of these results. Along with this calculation, three hypotheses are solved here.Tato bakalářská práce se zabývá výpočtem návratnosti investic do vybraných...