The Buy Grid model is a version of a theory developed as a general model of rational organizational design, which explains how companies make decisions (Dwyer and Tanner, 2006). The purchasing grid model has three components, which are: purchasing stages, purchasing class (purchasing situation), and purchasing centers. The Buying Stages Organizational purchasing behavior can be described using the purchasing stages (Dwyer and Tanner, 2006) which helps in explaining the various stages involved in a typical organizational purchasing decision-making process. Phase 1, need recognition: The organizational purchasing process is a form of problem solving resulting from a purchasing situation that is created when someone (the purchasing manager, the consulting manager or as a regulatory requirement) in the organization recognizes a problem that can be resolved through some purchasing actions so that the discrepancy between the desired outcome and the prevailing situation can be resolved. Phase 2, define the type of product needed: the organization must identify the type of product/service that can help solve the problem. Step 3, develop detailed specifications: After defining the type of product or service that can be used to solve the problem, a detailed specification is drafted. Step 4, Search for Qualified Suppliers: The organization needs to search for supplier information in different channels such as Internet web pages, trade shows, network partners, etc. Phase 5, acquisition and analysis of proposals: after obtaining all the information from the relevant suppliers, the organization should analyze the information according to its own criteria and standards. Phase 6, Supplier Evaluation and Selection: The evaluation phase of the process may involve the p...... middle of paper ..... .ent: a selected meta-analysis of research on supplier purchasing behavior organizations". Business Research JournalOlav Jull Sorensen (2009): “Forming, Organizing and Managing the (Global) Value Chain I A Theoretical Perspective”Philip Kotler; Kevin Lane Keller (2009): “Marketing Management,” 13th edition, Pearson Prentice Hall, pages 61-62 Robert, F. Dwyer, and John F. Tanner. (2006): “Business Marketing: Connecting Strategy, Relationships, and Learning” McGraw-Hill Education, 3rd edition. Page 71Schiffman, Leon G; Kanuk, Leslie Lazar; Hansen, Håvard (2008): “Consumer Behavior A European Outlook” Pearson Education LimitedSolomon, Michael R; Bamossy, Gary; Askegaard, Søren; Hogg, Margaret K (2010): “Consumer Behavior A European perspective” 4th edition. Svend Hollensen (2003): “Marketing Management a relationship approach”, FT Prentice Hall Financial Times, page. 9-10