External environment of an organization includes a variety of factors, whose existence, influence its behavior and performance. The action of these factors may be direct (for example, the actions of competitors) or indirect (for example, changes in business climate), and external environmental analysis is done in two different contexts: meso and macro environment. Are concerned, to be analyzed, those major variables that are affecting the organization, providing, strategic diagnosis, information on strategic situation complementary to those offered by internal analysis. Tests results at this level senses opportunities and threats existing and potential success factors of field work. Analyzing thus two types of environment, (meso and macro environment) can be identified strategic directions for action or policy options.