CNC machining is undergoing significant advancements to enhance its sustainability. AI-powered optimization, digital twin technology, IoT integration, hybrid manufacturing systems, sustainable cutting fluids, and materials contribute to this progress. AI and machine learning algorithms analyze machining data to optimize designs and reduce energy consumption. Digital twins enable virtual simulations, while IoT's real-time monitoring capability provides reassurance about machine performance efficiency. Hybrid manufacturing systems, biodegradable cutting fluids, and sustainable materials are also being used to reduce the environmental impact of CNC machining.