<p>This review focuses on the need for high-performance machining (HPM) of Inconel-718, a nickel-based superalloy widely used in aerospace, turbine, and other extreme temperature applications. Its unique properties make it an ideal material for extreme environments, but it also presents a significant challenge in its HPM due to high cutting forces, rapid tool wear, and poor heat dissipation. The review explores the intricate relationship between Inconel-718 mechanical characteristics and the HPM indicators, i.e., tool wear (TW), tool life (TL), cutting forces (CF), material removal rate (MRR), and chip morphology (CM). It highlights the optimal parameters needed from various research studies and discusses innovative strategies for improving machinability including advanced cooling methods including cryogenic cooling, high-pressure coolant systems, and minimum quality lubrication (MQL) as well as cutting-edge-assisted machining techniques like laser-assisted machining (LAM) and ultrasonic-assisted machining (UAM). The key contribution of this comprehensive analysis is that it examines the impact of tool geometry, coatings, and surface texturing on the performance and longevity of cutting tools. Additionally, the advanced machining operations (turning, drilling, and grinding) provide insights into potential improvement in surface integrity (SI) and overall machinability of Inconel-718. Finally, the paper identifies challenges and future opportunities for research to optimize HPM practices to enhance the applications of Inconel-718 in manufacturing.</p>