The book "RSM: A key to optimize machining: Multi-response optimization of CNC turning with Al-7020 alloy" by Bikram Jit Singh offers a comprehensive analysis of parametric optimization in the machining of non-ferrous alloys, particularly the commonly used Al-7020 alloy. It addresses the challenges associated with simultaneously maximizing the Material Removal Rate (MRR) and minimizing surface roughness (Ra). By applying Response Surface Methodology (RSM) using Minitab software, a systematic approach to optimizing these conflicting objectives is presented. The book highlights critical machining parameters such as cutting speed, feed rate, and depth of cut, which are essential for the efficiency and effectiveness of machining. The results are validated using ANOVA as a statistical tool, emphasizing the scientific foundation of the optimization strategies presented.