This paper examines the recent evolution of competition in the financial services sector in Latin America and the Caribbean (LAC), focusing on the rise of Fintechs and the emergence of a pro-competitive regulatory framework. This evolution results from a symbiosis of positive feedback between technology and regulation, which reinforce and balance each other in shaping a new era for the sector in the LAC region. Over the last decade, the financial sector in LAC has undergone profound changes, including the entry of new players, the emergence of new products and the reconfiguration of market boundaries. These developments have led to competitive gains and the provision of better, more accessible, customised and inclusive financial services. Regulatory advances have played a crucial role at various stages of this process, sometimes laying the groundwork, sometimes welcoming and protecting new technologies and models driven by financial digitalisation, and more recently, even leading and fostering disruptive innovations. Open Banking currently stands as a key element of this shared agenda, both regionally and globally, aimed at deepening market transformation towards greater competition, innovation and inclusion.