what is porter s five forces model 
similar to the porter diamond model porter s five forces model of business strategy identifies and analyzes five competitive forces that shape every industry and help determine an industry s weaknesses and strengths the bottom linethe porter diamond model explains the factors that provide a competitive advantage for one national economy or business over another the points of the theory resembling a diamond include the firm strategy structure and rivalry related industries demand conditions and factor conditions the model can be used by businesses to guide and shape strategies regarding investing and operating in national markets 