Interactive whiteboards — 4K touchscreen panels for a meeting room or a training space, where the screen is the surface people write and present on.
No — Android runs on the panel, so annotating and presenting works standalone. A laptop plugs in over HDMI when someone wants their own deck.
The panel takes multi-point touch, so several people annotate together rather than passing one stylus around.
Meeting and training rooms, and the business corner of a lounge. It is the screen a conference booking expects to find already on the wall.