Augmented Reality (AR) creates a unique, interactive experience by amalgamating the physical and digital worlds. It accomplishes this through the incorporation of computer-generated elements across various sensory domains - visual, auditory, haptic, somatosensory, and olfactory. At its core, AR is defined by three fundamental attributes: a fusion of reality and virtual elements, real-time interactivity, and precise 3D alignment of both real and virtual objects. This advanced technology enhances the real-world environment, either by adding constructive elements or by obscuring certain aspects of the natural surroundings. Consequently, AR enriches the real-world experience, whereas Virtual Reality (VR) replaces the physical world with a simulated environment entirely.

Closely allied with AR is the concept of mixed reality, which is a part of the broader domain that includes extended reality and computer-mediated reality. The terminologies often overlap due to the shared objective of enhancing the perception of the physical world with computer-generated inputs.

The primary strength of AR lies in its ability to seamlessly integrate elements of the digital universe into a person's real-world perception. It does so not just as a plain display of data, but by harmoniously blending immersive sensations into the environment, making them appear as natural components. The origin of functional AR systems that offered immersive mixed reality experiences can be traced back to the early 1990s, with the Virtual Fixtures system developed at the U.S. Air Force's Armstrong Laboratory being the pioneer.

Commercial applications of AR emerged first in the entertainment and gaming industry, before permeating into other sectors such as education, communications, medicine, and entertainment. Particularly in education, AR content can be accessed conveniently by scanning or viewing an image through a mobile device, or by utilizing markerless AR techniques, thereby revolutionizing the way knowledge is imparted and received.