This final thesis deals with the issue of key performance indicators (KPI) that are used as a controlling instrument, and in this paper it is investigated on the example of a manufacturing company. The work will investigate and define the function and role of controlling, and how controlling is applied in socially responsible business as the key to sustainable development. Based on goals and plans, each manufacturing company should determine several key indicators, the monitoring of which will enable it to obtain key guidelines for future development. Monitoring of production performance indicators such as work quality, capacities, share of scrap, production costs greatly contribute to the quality of production. Key performance indicators represent a way of measuring certain business processes and business results, on the basis of which it is possible to spot the company's weak points, but also to know the potential and possibilities of achieving results and successful business. By monitoring these indicators, it is possible to spot deviations from the company's business plan in time, and to take the necessary actions in time to achieve the business plan. The thesis will answer several research questions such as: What is controlling? What is the role of controlling in company management in the digital age? What are the types of controlling and what instruments does controlling use? Questions related to key performance indicators will also be answered, i.e. what are key performance indicators? What are the advantages and disadvantages of this controlling instrument? What is the role of visualizing data obtained by measuring key performance indicators? Why is the visualization of indicators and the introduction of business intelligence important for successful business? How is it possible to influence the efficiency, productivity of the process and overall success by choosing key indicators?