Recently, the interest in being part of more competitive companies has increased. For this, organizations apply various strategies of continuous improvement that allow them to maintain high standards of competitiveness. In this sense, organizations make use of various techniques, tools, and methodologies that support the achievement of objectives. This research presents an approach towards the Six Sigma (SS) strategy, one of the main continuous improvement strategies used to achieve competitiveness. On the other hand, organizations currently seek that during manufacture of their products, caring for the environment is naturally part of their objectives, seeking to achieve benefits with a sustainable impact. Therefore, this research seeks to define the CSF for implementation of SS through a factor analysis that allows identifying the relationship between SS and obtaining sustainable benefits (SB) through its implementation.

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Currently, organizations seek to position themselves in the market as the most competitive and profitable in their branch, through the continuous improvement of their processes, products, and/or services, applying various techniques, tools, and methodologies. Particularly in this chapter, focus on Six Sigma (SS) will be shown, a strategy used in companies to achieve competitive objectives, continuously improving processes. In this sense, it is considered important to identify and know the main factors that are involved in its implementation. Likewise, the organizations are presenting a culture towards the sustainability and the environmental care, derived from this, the methodology used to develop a measurement instrument that allows to identify the CSF in the implementation of SS, the sustainable benefits that can be achieve with correct implementation, the procedure used for the validation of the content of the instrument, the validity of internal consistency and the obtained results.