This chapter introduces the Scholarship of Teaching and Learning (SoTL) as an invitation into a dynamic, evolving conversation about what it means to teach, to learn, and to engage with higher education as a site of transformation. Including some fundamental definitions and examples, it establishes that SoTL is not a destination but a continual cycle of inquiry, one that asks us to remain curious and open to unlearning, relearning, and reframing our practices. This spirit of ongoing exploration underscores the central question of this chapter of why SoTL matters—and the chapter includes different reasons for why scholars and teachers across the world choose to dedicate time and imagination to this work. Rooted in Ernest Boyer’s call to expand the meaning of scholarship, the chapter highlights the potential to reshape our teaching, our students’ learning, our institutions, and, ultimately, our contributions to the public good and a more just society.