In simple terms, LED mapping is a convenient way to control a lot of lights, taking into account their positions in the real world.
How does LED Mapping differ from more traditional lighting control software?
When doing pixel mapping, the position of each light is critical. And secondly, you likely have many more lights to control than you would with standard DMX fixtures. It could well be a thousand times more. Traditional lighting consoles simply weren’t made to handle that many lights and generate effects based on their positions.