Porter's Five Forces - A model for industry analysis.

... Porter's Five Forces A MODEL FOR INDUSTRY ANALYSIS The model of pure competition implies that risk-adjusted rates of return should be constant across firms and industries. However, numerous economic studies have affirmed that different industries can sustain different levels of profitability; part of this difference is explained by industry structure. Michael Porter provided a framework that models an industry as being influenced by five forces. The strategic business manager seeking to develop a competitive advantage over rival firms can use this model to better understand the industry context in which the firm operates. Diagram of Porter's 5 Forces SUPPLIER POWER Supplier concentration Importance of volume to supplier Differentiation of inputs Impact of inputs on cost or differentiation Switching costs of firms in the industry Presence of substitute inputs Threat of forward integration Cost relative to total purchases in industry BARRIERS TO ENTRY Absolute cost advantages Proprietary learning curve Access to

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