MoSCoW prioritisation is a structured decision-making framework that forces teams to sort features, requirements, or ideas into four categories: Must Have, Should Have, Could Have, and Won't Have. The method is used widely in agile product development and design to create clarity about what is essential versus what is desirable, and to make the trade-offs involved in scope decisions explicit and visible. It is particularly effective for aligning diverse stakeholder groups around a shared understanding of priorities without requiring consensus on every individual item.