In this chapter, we examine the dynamic environment in which modern businesses operate and introduce the concept of the smart and sustainable ecosystem. After thoroughly reviewing the literature on sustainability and smart technologies, we explore the synergy between these two trends, highlighting how their integration is reshaping the business landscape. The chapter emphasizes key aspects of this transformation, focusing on the strategic and operational implications for companies. We discuss emerging trends and the evolving context to which firms must adapt, particularly how they can align their strategies and business models with these changes. This analysis leads to the proposal of a new business paradigm, the ‘smart and sustainable firm’, which integrates technological innovation with sustainable practices. The chapter concludes by outlining the characteristics of this model, providing a framework for companies aiming to thrive in this evolving ecosystem.