Glossary

Extended Reality (XR)

Extended Reality (XR) is the umbrella term for all technologies that merge the physical and digital worlds: Augmented Reality, Virtual Reality and Mixed Reality. The idea traces back to the reality-virtuality continuum described by Paul Milgram and Fumio Kishino in 1994, a scale running from the fully real environment at one end to a fully virtual one at the other. Apple and parts of the industry also market this space as spatial computing.

Quick Facts

Stands for
Extended Reality
Covers
AR, VR and Mixed Reality
Conceptual origin
the reality-virtuality continuum (Milgram and Kishino, 1994)
Related industry term
spatial computing
Practical web entry point
Web AR

The simplest way to hold XR in your head is the spectrum. At one end is the real world. At the other is a world made entirely of pixels. Everything in between is XR: AR adds digital objects on top of the real view, VR replaces the view completely, and MR sits in the middle, where real and virtual genuinely interact.

For selling products on the web, only one slice of XR is broadly reachable today: Web AR, which runs on the phones people already carry. Full VR and MR usually need a headset, and on the web they run through WebXR, which is well-supported on Quest, Vision Pro and Android XR browsers, though not yet on iOS Safari for phones.

That is the line PausAR Viewer takes. Rather than chase headsets, it delivers the reachable XR slice, Web AR, from one Elementor widget on iOS and Android, so you reach customers now while the rest of the spectrum matures.

Comparison

ConceptReal worldVirtual content
Augmented RealityVisibleOverlaid on top
Mixed RealityVisibleInteracts with the real world
Virtual RealityHiddenReplaces everything

FAQ

What is the difference between XR and VR?

XR is the umbrella term covering AR, VR and Mixed Reality. VR is one specific part of it: a fully virtual, headset-based experience.

Is spatial computing the same as XR?

They overlap heavily. Spatial computing is the term Apple favours for blending digital content with physical space, which in practice describes the AR and MR end of the XR spectrum.

How do I start with XR on my WordPress site?

Begin with the reachable slice: Web AR. With PausAR Viewer you add it to an Elementor page in minutes, no headset and no coding required.

Related Terms