The five forces model of competition is an analytical tool used to help firms find the industry that is the most attractive for them.
The five forces model of competition encompasses several variables and tries to capture the complexity of competition.
The five forces model suggests that an industry’s profitability is a function of interactions among five forces.
In other words, an industry's profitability is
the rate of return on investedcapitalrelative to its cost of capital
Firms use the five forces model to identify the attractiveness of an industry as well as the most advantageous position for the firm to take in that industry, given the industry’s structural characteristics.
the attractiveness of an industry is
measured by its profitability potential
The five forces:
potential entrants to the industry
product substitutes
suppliers
buyers
competitive rivalry among firms currently in the industry