Abstract
This research delves into Sustainable Business Models (SBM) to address the rising demand for sustainability in organizational practices, diverging from models focusing solely on short-term profits. The study fills existing research gaps in SBM implementation by providing a comprehensive, theorydriven exploration of Critical Success Factors (CSFs), utilizing predominant management theories within the context of an exemplary sustainable Italian firm. Through insightful semi-structured interviews and through the theoretical lenses of six organisational theories the paper reveals pivotal internal CSFs and offers theoretical and practical insights for successful SBM implementation. Based on these theories, this study proposes the following six CSFs: “Top management commitment”; Impact Team contribution; “Sustainability embedded production”; “Employees proactiveness”; “Sustainability training”; “R&D activities”. Ultimately, this study offers significant theoretical contribution and policy implications.