This document is a guide that outlines the roles and responsibilities associated with the various Six Sigma belt levels. It describes how professionals utilize a data-driven methodology to enhance processes by eliminating defects, variations, and waste. The guide details the certification levels, starting from the White Belt, which provides basic knowledge of Six Sigma principles, to the Master Black Belt, who possesses extensive training and serves as a consultant. Each belt level has specific responsibilities, such as data collection for White Belts, co-facilitation for Yellow Belts, and leadership roles for Green and Black Belts. The document emphasizes the importance of these roles in achieving project success and organizational improvements, highlighting that the effectiveness of Six Sigma initiatives often relies on the skills and certifications of the professionals involved.