Augmented reality (AR) and virtual reality (VR) are immersive technologies that blend digital content with the physical world or create entirely virtual environments, respectively. AR overlays digital information, such as graphics and sounds, onto the user's view of the real world through devices like smartphones or AR glasses. VR immerses users in simulated environments through headsets or VR rooms, providing a sense of presence and interaction within virtual spaces. Applications of AR range from mobile apps for navigation and gaming to industrial training and medical simulations. VR applications include training simulations for industries like aviation and healthcare, virtual tours of historical sites, and immersive gaming experiences. Mixed reality (MR) combines elements of both AR and VR, allowing virtual objects to interact with the real environment. The development of spatial computing technologies enables accurate mapping and tracking of physical spaces, enhancing user interaction and immersion in AR and VR experiences. Education and workforce training benefit from AR and VR applications by providing interactive learning environments and hands-on simulations. Healthcare uses AR and VR for surgical planning, patient education, and therapy sessions, enhancing medical training and improving patient outcomes. Architectural and engineering firms utilize AR and VR for designing, visualizing, and presenting complex projects, enabling stakeholders to experience designs in immersive virtual environments. Entertainment industries continue to innovate with AR and VR experiences in movies, concerts, and virtual theme parks. Ethical considerations in AR and VR include user privacy, data security, and the potential impact on mental health and social interactions. As AR and VR technologies advance, their integration with artificial intelligence and 5G connectivity promises new applications and transformative experiences across industries and daily life.