Abstract
In the context of the fast-moving environment in today's business world, the major part of firms use a strategy to approach the future, to ensure the continuation of the company, and anticipate factors associated with the external and internal environment. In this organizational thinking context, there exist different ways to get competitive advantages, depend on the environment and different levels of uncertainty. Each firm wants to reach purposes and essential policies to achieve these goals, but if the business world is viewed as being complex, because this edge is in a turbulent environment and in a knowledge economy organization, traditional strategy can't use the strategy tools efficiently. Turbulent environment is the fact that the environment is always fast-moving, because after industrial economy, the business world has known a lot of turbulences, in the first place, globalization is the main factor, but also introduction of new technologies, the 9/11/2001, the dot.com, people change from robots (Fordism) to individuals, etc.
