The financial technology (FinTech) sector has witnessed a paradigm shift with the integration of cloud computing, enabling scalable and innovative solutions. Cloud platforms offer FinTech firms the ability to deploy secure, cost-effective, and agile systems to meet dynamic market demands. This paper explores how cloud computing has transformed FinTech operations, focusing on its role in enhancing scalability, security, and compliance. The study examines foundational technologies, challenges, and best practices, with references to pioneering works published before 2019. By leveraging cloud platforms, FinTech firms can address regulatory complexities while fostering innovation and customer trust.