The technology that allows for the simulation of real-world environments in training is called virtual reality (VR) or augmented reality (AR). These immersive technologies create interactive experiences that enable users to practice and learn in a controlled environment. VR fully replaces the real world with a computer-generated simulation, ideal for fields like aviation and medical training. AR overlays digital information onto the real world, enhancing experiences in areas like retail and education. Both technologies improve retention through experiential learning and help users build skills without real-world consequences.