The S and OP (Sales and Operations Planning) process is an important process used in leading Brazilian companies with the objective of increasing their competitiveness in their markets. This process has the purpose of vertical (Strategies and objectives, action plans) and horizontal (among functional areas) alignment of the company, allowing managers to have a broad vision of all áreas. The main benefits of process is the integration of the functional áreas of the company, providing a balance in the logistics chain, and balancing the supply and demand between areas from the end customer to the vendor. The thesis presented aims to analyse the practice of the sales and operations planning (S and OP), in a Brazilian retail company. The dissertation was based on a case study in which a literature review of concepts, frameworks and maturity models was carried out. It followed data collection in the field through interviews, observation of practices, analysis of documents and tools with managers who participated in the S and OP of the company in 2015. Finally, content analysis presented the company s S and OP process and recommendations and also identified points initially underestimated by the study.