VPBank, one of Vietnam's largest private banks, has built an OpenAPI platform with MongoDB to accelerate the digitization of its financial services and enhance customer experience. By adopting MongoDB Atlas for OpenAPI, VPBank moved to a microservices architecture, which supported the creation of its own OpenAPI platform and set a new standard for digital banking in Vietnam. The bank's primary goal was to harness the power of data and manage unstructured data more efficiently, switching from traditional relational database management systems and SQL model. With MongoDB Atlas, VPBank can handle multiple workload types, including time series data, event data, real-time analytics, notifications, and big data, and processes over 100 million transactions per month. The platform consists of over 220 microservices, providing flexibility, scalability, and performance to support the bank's digital transformation journey, with plans to continue its cloud transformation and modernize applications in the future.