Porter's Five Forces
The competitive forces that shape strategy — in under two minutes.
Industry structure changes over time, and is not static. Over time, buyers or suppliers can become more or less powerful. Technological or managerial innovations can make new entry or substitution more or less likely. Changes in regulation can change the intensity of rivalry, or affect barriers to entry. Choices by competition, such as new pricing or distribution approaches, can also affect the path of industry competition.
Five Forces analysis is essential to anticipate and exploit industry structural change.