Api standards for data-sharing (account aggregator)
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Restricted CGIDE – API standards for data-sharing – October 2022 37 JSON result Graph 16 Restricted CGIDE – API standards for data-sharing – October 2022 38 7 Conclusions Data-sharing is one of the main pillars of the open banking initiatives that are emerging in financial services. Innovations include the involvement of third-party providers, also known as payment service providers, which facilitate access to banking records with users’ consent. Data-sharing promotes transparency in a digital society, and supports high levels of reciprocity and cooperation in the financial ecosystem. The results of a survey of CGIDE central bank members show that there is a common interest in implementing data-sharing with the aim of increasing efficiency and promoting competition within their ecosystems. The main challenges are coordination among participants, standardisation and technological infrastructure. The scheme for data-sharing is largely determined by whether a rigid or flexible regulatory framework is preferred. The greatest challenges in selecting an adequate model are: establishing where the data will be stored, who the consumers are and which communication interfaces to use. This report presents three models: centralised, decentralised and trust – and develops the user interactions and their data flows. Additionally, the report presents account aggregator functionality and possible arrangements for implementation in the open finance ecosystem. The report shows the successful implementation of a demo based on a microservices architecture that promotes high availability, scalability and resilience. The designs and results (JSON) are part of the report. The implementation of an aggregator uses Java-based frameworks and API REST. The use case was based on the accessing of personal account balances by data consumers, which were made available by three banks (also simulated in the demo). Other organisations, mainly central banks, participated through presentations about their national experiences. These were the cases of Australia, Brazil, India, Korea and the United Kingdom. Additionally, Raidiam Services Limited presented its experiences and perspectives as a private technology provider for open banking and data-sharing initiatives. |
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