This 2024 case study describes how FNBO (First National Bank of Omaha), founded in 1857, migrated away from an on-prem Pivotal Cloud Foundry (PCF) platform to AWS to reduce rising maintenance costs, eliminate PCF licensing, and modernize a complex estate of roughly 420 microservices. After early challenges moving workloads to Amazon EKS, Brillio supported a phased, de-risked approach that began with a pilot using a proprietary migration tool to scan and map services, then migrated about 120 microservices to AWS non-production while analyzing dependencies and provisioning required infrastructure (databases, queues, secrets, roles) using Infrastructure as Code. The program established a “migration factory,” dual-mode deployments, and modernization to AWS-managed services (for example Aurora

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