The rapid proliferation of mobile payment systems has fundamentally transformed the financial landscape, catalyzed by advancements in information technology (IT) and the broader evolution of the fintech ecosystem. This paper explores the rise of mobile payment platforms as a pivotal component of fintech, emphasizing their impact on financial services, consumer behavior, and global economic systems. Mobile payment systems leverage key IT innovations such as blockchain, artificial intelligence, and application programming interfaces (APIs) to deliver secure, seamless, and scalable financial solutions, driving their widespread adoption across both developed and emerging markets.

The paper investigates the historical evolution of mobile payments, analyzing the milestones that have shaped this transformative technology. Through case studies of global leaders such as Alipay, PayPal, Google Pay, Unified Payments Interface (UPI - India), and Zelle. It highlights how IT infrastructure and mobile-first ecosystems are redefining convenience and accessibility in financial transactions. Additionally, it examines the implications of these systems on traditional banking, small businesses, and consumer experiences.

However, the growth of mobile payment systems is not without challenges. Security concerns, regulatory hurdles, and disparities in digital infrastructure pose significant barriers to universal adoption. Despite these obstacles, opportunities abound in emerging markets and underbanked populations, where mobile payments have proven instrumental in fostering financial inclusion.

By presenting comparative analyses, data-driven insights, and forward-looking predictions, this paper provides a comprehensive understanding of how information technology is shaping the future of the fintech ecosystem through mobile payment systems. The findings emphasize the dual role of IT as both a disruptor and enabler in the financial sector, underscoring the transformative potential of mobile payments in driving economic innovation and inclusivity worldwide.