Variable data printing is like a printer that can print different things all at the same time. For example, if you have a bunch of paper copies of something, like cards or labels, it can print different things on each one so that they are all unique. It's a bit like using a regular printer, but it can handle lots of different kinds of data, like pictures or text. With variable data printing, you can create a different card or label for each person or thing that needs it, making it easier and faster to get the job done.