What does it mean? It means that, when you want something quickly made (or you are just testing/learning and making a prototype), there is no need to use a soldering iron, you just. plug each component in the right place (if you are following a tutorial of course) and it works!

A breadboard, solderless breadboard, or protoboard is a construction base used to build semi-permanent prototypes of electronic circuits. Unlike a perfboard or stripboard, breadboards do not require soldering or destruction of tracks and are hence reusable.

Since the breadboard has no ground or power plane, you must rely on ground and power busses that are difficult to decouple and have parasitic impedance.

In summary, Virtual Breadboard is a versatile tool for anyone interested in electronics, from beginners and educators to hobbyists and professionals. It provides a virtual environment to experiment with and learn about electronics without the immediate need for physical components.