Immersive presence is the subjective sense of physically being within a virtual or mediated environment, rather than merely observing it on a screen. It is produced by consistent, low-latency sensory feedback across vision, audio and touch, so that a user’s perception and reactions align with the simulated space as though it were real. High presence is a key quality metric for VR and AR systems, driven by technologies such as spatial audio and haptic feedback that reinforce the illusion of embodiment.