Think of BPMN as the “Sheet Music for Business.” Just as musicians all over the world can read the same notes to play a song, business people use BPMN to show exactly how a process works. It uses simple shapes—like circles for the “Start,” rectangles for “Tasks,” and diamonds for “Decisions”—to show how a piece of work moves through a company. It’s the best way to make sure everyone agrees on how a job should be done.