This article reviews structural contingency and strategic co-alignment theories, which comprise two core perspectives in analysis field and organizational design. It is concluded that the systemic theory exceeded classic conception of insular and closed organization, emerging several current research considering the environment as one of the incident variables in organizational processes, including the so-called adjustment theories, which explain the organization as a phenomenon that it is structured in different ways according to the different effects received from environment and reaches its peak performance when the co-alignment of their endogenous factors with exogenous situational factors is achieved.