Modernizing a legacy core without pausing the roadmap
A cross-border banking-services firm
An incremental strangler-fig migration off an aging monolith to cloud-native services — cutting run costs and release risk while the business kept shipping.
- Strangler-fig
- Containerization
- CI/CD
- SRE & observability
The challenge
A growing financial-services firm was held back by an aging on-premise monolith: deploys were slow and risky, infrastructure costs climbed with every spike, and the team could not safely change critical paths. A big-bang rewrite was off the table given uptime obligations.
Our approach
We mapped the monolith's domains and dependencies, then chose strangler-fig boundaries that let us peel off high-value capabilities one at a time without a single high-risk cutover.
We containerized the extracted services, moved them to a cloud-native platform with infrastructure-as-code, and put CI/CD with automated testing in front of every change.
We added observability and SRE practices — SLOs, autoscaling, and right-sizing — so spend tracked real usage and incidents were caught before customers felt them.
Throughout, we paired with the client's engineers so they owned the new platform and kept shipping confidently after hand-off.
The results
-42%
monthly cloud run cost
8×
deploy frequency
Zero
downtime at cutover
Services involved
Cloud, Modernization & Product Engineering
Application modernization, cloud-native development, and product engineering built for scale and resilience.
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