This research explores the nexus between sustainable entrepreneurship and international business, particularly in the context of post-COVID-19 socio-environmental grand challenges. By examining the role of Sustainable Development goals and corporate social responsibility (CSR) practices in SMEs' global expansion, the study illustrates how sustainability is integral, not just to business ethics, but also as a catalyst for international growth and innovation. Following an exploratory qualitative methodology through semi structured interview with entrepreneurs and experts. The research underscores the pivotal role of entrepreneurial values and moral cognition in decision-making when aligning international business strategies with sustainability goals. Drawing on various academic sources to highlight the evolution of entrepreneurship from profit-driven motives to encompassing broader social and environmental outcomes, the results suggest a large scope of sustainable behaviors typologies influencing different strategic decisions. The findings of this exploratory study, aim to contribute to the discourse on sustainable entrepreneurship within international settings, advocating for a nuanced understanding of how diverse contexts influence sustainable business practices and the relevance of a purpose driven entrepreneurship as a key element for SMEs internationalization.