In this blog, the discussion moves from a concern with the nature of demand in the supply chain to a detailed review of push and pull inventory replenishment methods. Previously, it was stated that demand begins with the customer as independent demand, but from that point on is dependent as it passes upstream through the supply chain. How participants in the supply chain respond to demand will determine their selection of either a push or pull inventory replenishment method. A supply chain could be uniformly push or pull, an individual intermediary could be push or pull, or channel partners could be a combination of both. Actual channel replenishment design is driven by a variety of factors, such as the nature of the product, marketing strategies, seasonal campaigns, stage of product life cycles, and others.