A virtual tour is an interactive representation of a property or space. While that can be either a 3D digital twin or a 360 walkthrough , the best type of virtual tours provide an immersive experience by accurately replicating the physical environment—and that's where "reality capture" comes in.

Reality capture technology is what sets digital twins apart. These tours recreate as-built environments digitally to give viewers the ability to explore spaces from anywhere, on any device. Viewers can navigate the 3D space simply by clicking or tapping their screen; they can look up or down, as well as side to side, just as they would in real life. 

The transition from one point to the next within a good virtual tour should be seamless, without any visual distortions.