Demand planning is a critical cross-functional process, which helps to align and forecast customer demand for a product or business. It aids to optimize inventory management, avoid supply chain disruptions, and minimize supply chain inefficiencies. It also helps to increase overall customer service level, customer satisfaction, efficiency, and profitability. Demand planning compliments sales and operation strategy by providing direction and forward-looking guidance. Demand planning, including demand sensing, should be a continuous process to support effective decision making at all levels.