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Demystifying APIsation of Fintech: Transforming Financial Infrastructure through Interface Integration

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  • Naresh Karri

Abstract

Application Programming Interfaces (APIs) have fundamentally transformed the financial services landscape through a phenomenon known as "APIsation" - the systematic integration of standardized interfaces across financial infrastructure. This architectural evolution has reconfigured development economics, competitive dynamics, and service delivery models throughout the sector. Financial institutions adopting API-first strategies have achieved dramatic efficiency improvements across product development cycles, maintenance costs, and compliance management while simultaneously enhancing service quality and customer experience metrics. The proliferation of specialized API providers has created a comprehensive ecosystem spanning payment processing, identity verification, core banking, and regulatory compliance domains, enabling unprecedented levels of functional specialization and interoperability. Despite significant implementation challenges related to data security, vendor dependency, regulatory complexity, and service reliability, the adoption trajectory continues to accelerate across both established institutions and emerging fintech ventures. Looking forward, the emerging concepts of composable finance, Banking-as-a-Service, and embedded finance represent the next frontiers of this transformation, with the potential to fundamentally redefine traditional industry boundaries and democratize access to sophisticated financial capabilities

Suggested Citation

  • Naresh Karri, 2025. "Demystifying APIsation of Fintech: Transforming Financial Infrastructure through Interface Integration," International Journal of Computing and Engineering, CARI Journals Limited, vol. 7(6), pages 1-13.
    • Handle: RePEc:bhx:ojijce:v:7:y:2025:i:6:p:1-13:id:2918
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    File URL: https://carijournals.org/journals/index.php/IJCE/article/view/2918
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