Buyers and sellers in mature industrial markets can turn single transactions into long-term beneficial relationships by a deeper understanding of the complex connection between the two. A “must-do” for the sellers, in particular, is to understand patterns of investment and reward, and effectively manage the process that defines the dynamics of buyer-seller evolution. The buyer is the person or organization that purchases products from suppliers. A buyer could be a manufacturer purchasing raw materials a customer buying a finished product from a retailer. The relationship between the buyer and seller can be either short term (one off or low commitment purchases) or long term, involving regular purchases based on established agreements.