retail shelf management means matching cost-efficient consumer demand with retail operations. This takes especially place at the point-of-sales in front of the retail shelf, where consumer demand meets retail offer. Therefore, we develop a comprehensive planning framework for retail demand and supply chain planning in this chapter, before we analyze and develop decision support systems for retail shelf management. The increasingly competitive retail environment requires greater customer orientation and operational efficiencies. Consumers are always demanding higher service levels and better purchase prices. Retailers are striving towards broader product variety, better prices and lower costs, and are growing vertically by taking over more logistical functions. Effective structures and planning tools for demand and supply chain planning (DSCP) are therefore the core technique for coordinating thousands of individual decisions in supply chain and customer management.