Demand and Inventory Planning is a business strategy which seeks to ensure that organizations have the right amount of stock available in order to meet customer demand, while minimizing inventory costs. This process takes into account factors such as customer buying trends, seasonal cycles, regional preferences, and economic conditions in order to determine the optimal level of stock needed. By using data to predict future customer demand, companies can create more reliable supply chains and accurately forecast when shortages or surpluses may occur. The goal of Demand and Inventory Planning is to optimize resources and keep customers happy.