DirectX 12 is a graphics application programming interface (API) developed by Microsoft. It allows software developers to create high-performance games and applications for Windows and Xbox platforms. By providing low-level access to hardware, it enables better resource management and improved performance in rendering graphics. One of the key features of DirectX 12 is its ability to utilize multi-core processors more efficiently. This means that games can run smoother and with better graphics, as the API can distribute tasks across multiple CPU cores. Overall, DirectX 12 enhances the gaming experience by delivering more realistic visuals and faster performance.