First published November 2026

What is extended reality? XR, VR, AR and MR in plain terms

Extended reality (XR) is the umbrella term for technologies that blend digital content with the real world. Virtual reality (VR) replaces your surroundings entirely and augmented reality (AR) overlays digital content on your view. Mixed reality (MR) lets digital and physical objects interact. The abbreviations name positions on a single span.

The broadcast line that separates AR from MR

A televised football match carries two kinds of graphics. The score sits on top of the picture as a layer of information. The yellow first-down line sits inside the picture instead and passes behind a player’s leg. The standards body CTA-2069-A uses that pair as its everyday test: the superimposed score is AR and the integrated first-down line is MR.

Where the line runs from real to virtual

XR covers the range of technologies that combine digital content with the physical environment or replace it entirely (IEEE). At the real end the room is simply the room and AR adds graphics, text or data on top of the view. MR lets that layer interact with physical objects. VR replaces the user’s visual and auditory perception through a VR headset with six-degree-of-freedom tracking. The terms also differ in what they ask of the equipment. AR can sit on a view while MR has to know where the table is and VR has to supply the whole scene. MR sits between AR and VR on that span and borrows from both.

Term	What the user sees	How the digital content behaves
AR	The physical surroundings with graphics, text or data added	Sits on top of the view
MR	The physical surroundings with digital objects placed in the scene	Interacts with physical objects and hides behind a hand
VR	A digital scene in place of the room	Replaces visual and auditory perception

Each position hands more of the room to the system. A service call may need one diagram in the corner of the eye. A design review may need the whole room replaced. Most corporate requests sit somewhere between those two ends.

Who sets the definitions

IEEE Technology Navigator sets XR as the umbrella and places VR, AR and MR beneath it. CTA-2069-A supplies the broadcast test for the boundary between AR and MR. Standards bodies publish these lines so two suppliers can be compared on the same terms. A label in a slide deck carries less weight than a published definition.

Where VR earns its place at work

VR suits work where the real object is hard to gather in one place. A trainee can run the same procedure in the same order as the person before and the equipment behaves identically each time. Six degrees of freedom means the headset tracks position and orientation so a step forward changes the view. Walmart has trained more than one million associates in VR since 2018 with 17,000 headsets and reported test-score improvements of 10 to 15 per cent. Boeing reviewed landing-gear installation on the 737 MAX 10 in VR before final assembly so engineers could inspect the parts at full scale. Running VR sessions for corporate groups makes the practical distinction plain: VR is the one that takes the room away. A company that wants VR on its own site for a day is buying a run of sessions rather than a box of kit. Our managed sessions arrive with the delivery, the setup, the operator and the strike at the end.

Where AR puts data on the job

AR keeps the technician’s own surroundings and adds the diagram, the manual or the remote expert. Boeing linked mechanics worldwide through HoloLens headsets in 2021 (Reuters). Vendor case studies show Vuzix smart glasses guiding field-service engineers through procedures. The value is proximity: the information arrives where the hands are working. A fitter does not put the tool down to look at a screen because the overlay sits on the real equipment. Both hands remain on the job while the instructions stay in view. A colleague in another plant can then point at the exact bolt. AR suits inspection and commissioning work where a second pair of eyes has to be somewhere else.

Where MR has to hold the object

MR matters when a digital object has to sit among physical ones and stay put. Healthcare teams use apoQlar HoloMedicine to review CT and MRI scans as interactive 3D models. The scan behaves like an object on the table rather than a picture on a screen. Turn it and the model turns. Pass a hand in front and the overlay gives way. That spatial behaviour is the whole difference from AR. MR suits design reviews and clinical planning where a model has to be handled by several people at once. Two clinicians can point at one structure together.

Why the labels blur in the market

WIRED notes that the terms get used loosely across the industry and that AR is sometimes called mixed reality. Apple described Vision Pro as a spatial computer rather than a VR or AR headset. Marketing muddies the words and a buyer can leave most of that aside. The reliable move is to ask what the system does with the physical room.

XR is not another word for the metaverse

XR describes the devices and the experiences. A metaverse is a persistent shared virtual space that people return to (IEEE). A training programme can run entirely in XR with no metaverse involved.

What to ask when a brief names XR

Three questions place most requests on the span.

Does the work need the room replaced or kept?
Do digital objects need to sit among real ones?
Do the hands need to stay free?

A brief that says XR leaves the delivery format open. A brief that says VR has already chosen a VR headset and a replaced view. The wording is worth settling before the first planning call.

What the umbrella term is good for

One term covers the range and a first conversation can start with the job instead of the hardware. A training need and a maintenance need can both be scoped in XR and only then split into VR, AR or MR. That order keeps the format tied to the task. One conversation with a supplier can then cover the whole range. The abbreviations will keep arriving in budgets and tenders and underneath them the span stays the same.

Once a brief settles on the VR end, the venue question comes next. What a VR setup needs from a venue sets out the shelter, the socket and the floor space in metres.

Sources

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