This final thesis, "Improvement of Business Operations through Controlling Measures – A Case Study on a Specific Example," will explore how the application of controlling can be crucial for enhancing performance and efficiency in the modern business environment. The chosen company is an ideal example, as it has recorded consistent growth from its inception to the present day, thanks to controlling measures and adapting its operations to market needs. The contemporary management of the observed company faces various challenges, such as the COVID-19 and economic crises, changes in trends, etc. We are currently in an era of digitalization and automation of business processes. Organizations have an increasing need to make quick decisions and must adapt their business strategies to ensure company growth. In this context, controlling becomes an important tool for providing relevant information and analyses that enable management to make business decisions based on quality information. Controlling, as a system that encompasses planning, monitoring, analysis, reporting, and control of business processes, is essential for organizations to adapt to market challenges. Through systematic monitoring of market trends and analysis of business performance, controlling helps identify problems and respond to challenges in a timely manner. By developing controlling, organizations gain a partner that provides necessary information about market changes and assists in solving everyday problems. The case study on Tokić d.o.o. will examine the entire development of its business operations, and the financial analysis will cover the period from 2019 to 2023. This period was chosen due to the COVID-19 crisis and market changes and will serve as an excellent example of how Tokić d.o.o. strategically adapts to the changing business environment through controlling measures. Through this case study, we will understand the importance of the continuous development of controlling, which provides crucial information for successful business management.