The following is a summary of the methodologies proposed for implementation of the Strategic Planning through the Strategic Management in the companies, which as seen in recent years, it has become increasingly important for companies to succeed in developing and implementing strategic plans for confront better the market and its changing conditions and with even more rapid progress of globalization. The implementation and execution of strategic plans in the companies gives them better tools to businesses to confront the uncertainties of the market, provides a clear horizon and shared all employees know where to go and how they will achieve through its mission, vision, politics and corporate objectives, making enduring companies and avoiding the high mortality of these. The strategic plans are in the hands of the study and analysis of their environment, the environment is changing and therefore it is necessary to study it constantly, which is why I will also show different methodologies for the study of competition.