A. Certified Master Baker is the highest level of Baker. A Certified Master Baker (CMB) is a highly skilled and certified professional in the field of baking. This designation is granted by professional organizations, such as the Retail Bakers of America (RBA) and the American Institute of Baking (AIB), to individuals who have demonstrated exceptional expertise, knowledge, and proficiency in various aspects of baking and pastry arts. To become a CMB, candidates must have extensive experience in the baking industry and demonstrate a high level of expertise in areas such as bread baking, pastry arts, cake decoration, confectionery, and more.