This document discusses the process of controlling in a business context. It begins by defining controlling and its importance in achieving organizational goals and ensuring standards are met. It then outlines key aspects of the controlling process: setting standards, measuring performance, comparing actual performance to standards, analyzing any deviations, and taking corrective measures. The document also notes some limitations of controlling, such as its inability to control external factors and difficulty in setting quantitative standards. It provides examples throughout to illustrate controlling concepts.