This essay delves into the critical aspects of business decision-making, examining the decision-making process and the application of investment appraisal techniques. It begins with an introduction to decision-making as a core management function, emphasizing its significance for organizational success. The essay then presents a case study of ABC plc, exploring two investment options: a Motor Software Project and a Hardware Project. The feasibility of each project is assessed using the payback period and net present value (NPV) techniques. The NPV calculations and payback period computations are provided for both projects, leading to recommendations based on the analysis. The essay concludes by discussing the influence of both financial and non-financial factors on the decision-making process, highlighting the importance of considering a wide range of elements. References to relevant academic literature are included.