Abstract
The strategy has taken a big place in the firm and it has become the only way to do business. Big companies have special staff to formulate strategies, whereas in the smaller firms it is the CEO and/or the Head Officer who takes and makes the strategic decisions. Some definitions are necessary to understand the complexity of the strategy. The strategic management is defined as "the art and science of formulating, implementing and evaluating cross-functional decisions that enable an organization to achieve its objectives" (David, 1998). According F.R. David, the strategic management includes 3 different stages: the strategy formulation, the strategy implementation and the strategy evaluation. In addition, there exists a Strategic Management Model to guide the managers through their task. Conceptual models are most commonly used in strategic management. But what is the role of these models in strategic management? How do models contribute to decision-making? In the first part, we will try to answer these questions.
