This literature review aims to provide an up-to-date synthesis of operations management in service systems in the cooperative services sector, both locally, regionally, nationally, and internationally. Through an exhaustive analysis in the sector, we seek to identify the main problems that hinder its development and sustainability. Where a series of challenges related to regulation, access to financing and the incorporation of innovations, the scarcity of resources, the need to train members in new practices, constant changes in regulations and various operational limitations contribute to aggravate the current situation of these organizations.  Therefore, recognizing these factors is essential to propose effective strategies that strengthen their performance in the present and guarantee their future projection. To this end, the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology will be adopted, which includes the identification and evaluation of scientific articles from various databases. Studies on operational management in the cooperative services sector will be reviewed and continuous improvement methodologies such as Theory of Constraints, Lean Service and Six Sigma will be explored. Highlighting its potential to increase efficiency and improve service in cooperatives during the period 2015-2025. The purpose of this review is to provide a comprehensive view of the challenges and opportunities in operations management in the cooperative services sector, as well as to determine whether the implementation of these methodologies has contributed to mitigating existing challenges. accordingly, to establish bases for future research that optimizes these processes and the strengthening of the cooperative sector.