Business sustainability integration is a complex task and strongly linked to operations management. The challenge is to conduct more sustainable operations through companies? value chain and their network. In sustainable operations management area, maturity models have been developed for specific purposes. However, there is a lack of models that considers sustainability integration through the evolution of sustainable operations? capabilities. Based on literature review, case studies and expert panels, this paper develops and proposes a maturity framework defined by sustainable operations management theory. Its is possible to identify an evolutionary path, which goes from an initial approach focused in compliance aspects and firm?s value protection to an innovative approach, based on corporate social responsibility supporting operations? integration in a sustainable system, and long-term values development. The experts? panel identified key processes areas that need to be prioritized in each level, and also analyzed the adaptation of some elements from Capability Maturity Model Integration (CMMI) to sustainable maturity framework design and development.