Augmented reality (AR) technology enhances real-world environments with digital overlays, allowing users to interact with 3D models, animations, and more through devices like smart glasses. There are several types of AR, including marker-based and projection-based, and its applications span various industries such as gaming, retail, manufacturing, and healthcare. The future of AR is promising with advancements in 5G technology and ongoing development of tools like Apple's ARKit, which continues to enhance user experiences through improved capabilities.