The diploma thesis deals with the issue of creating an application for data visualization in the Self Service Business Intelligence tool Power BI. The main goal is to move the application used to visualize client accounting data in the corporate consulting company PwC from the Qlik Sense tool to the Power BI tool.The theoretical part deals with the characteristics of Business Intelligence solution, its usual components and also Self Service BI solutions. The work then describes the area of data visualization and dashboards. Next, the Qlik Sense and Power BI tools are introduced, which are then compared from several different perspectives.The practical part of the work is devoted to the description of the current state of the application in ...