Which model is used to describe the interaction of external forces that affect an organization's strategy and ability to compete?

Competitive forces model

Explanation:

A Competitive forces model is the important tool which is used in the strategic analysis to determine the competitiveness in an organization. The model is commonly known as the "Five Force Model of Porter", which includes five forces - intensity of a rivalry, the bargaining ability of the buyers, threat of the potential new entrants, the bargaining power of a supplier, and the threat of substitute goods or services.

It affects the organizations's ability to compete as well as the strategy to succeed.