Business Process Modeling Notation (BPMN) is like a language used to draw pictures that show how work should be done in a business. The pictures are made with symbols (like a square or circle or arrow) and each symbol has a meaning. For example, a box usually means 'start here' and an arrow usually means 'go to the next step'. By drawing these pictures, you can clearly see what steps need to be done in order to complete a process, like how to make an order or respond to a customer.