DKB's on-premises internet banking platform limited scalability and innovation, and any migration had to meet strict BaFin and DORA requirements across 84 databases and 30TB of data. Netlight and AWS Professional Services co-created a phased migration to the cloud with near-zero customer downtime. The result is 50% lower infrastructure costs and 25 engineering teams now managing their own services.
DKB reduced infrastructure cost by 50% after moving its digital banking platform to the cloud.
The migrated platform seamlessly supports DKB's more than 6 million customers.
84 databases holding 30TB of data were moved with near-zero downtime.
Challenge
DKB's on-premises internet banking platform hindered scalability and innovation, so it needed a migration to the cloud. The team had to meet strict BaFin, DORA, and internal compliance standards while coordinating 50+ stakeholders across 16+ engineering teams. The move covered 100+ containerised microservices, 130 APIs, and 84 databases holding 30TB of data, all with near-zero downtime. Getting it wrong risked service disruptions, regulatory penalties, and loss of customer trust.
Solution
Netlight, working with AWS Professional Services (ProServe), ran a phased migration based on AWS Migration and Acceleration Program (MAP) best practices. The work included well-architected target designs for EKS, RDS, S3, VPC, Direct Connect, MSK, and other cloud infrastructure, plus detailed compliance and risk planning and a staged go-live. DKB was prepared for self-managed cloud operations through a new operating model, DevOps upskilling, and a bespoke training program. The migration completed across three phases, web frontends, database migration, and backend systems, without critical disruptions.
Impact
Netlight and AWS consistently engaged with our regulatory requirements and supported us in shaping a cloud setup. Our cloud-based development environment significantly reduced the time from experimentation to production.
DKB (Deutsche Kreditbank AG) is one of Germany's leading banks, serving more than 6 million customers and managing over €135.8 billion in assets. Its ambition is simple: give customers the best possible digital experience. To get there, DKB set out to modernise its digital banking platform on a scalable, resilient foundation.
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