The article discusses how to choose the best ways to make investment decisions when managing business processes, focusing on improving energy efficiency in residential buildings. The researchers analyzed different methods like net present value, internal rate of return, and payback period to compare energy rehabilitation projects. They found that these methods show results in different ways: net present value gives a current monetary value, internal rate of return shows profitability in percentages, and payback period indicates how long it takes to recoup the investment. The payback period method was highlighted as important for this specific problem.