A top-tier banking group serving 10M+ customers needed to ship like a fintech without compromising regulatory compliance or core stability. Client name withheld under NDA. iAastha advised on the strategy and governance for a modern digital layer built over their legacy core.
Mobile releases took six months because every change was coupled to a monolithic core. Neobanks shipped weekly and were winning younger customers. The bank's engineers spent most of their time maintaining legacy systems, leaving little capacity for new products—while regulators demanded auditability, data residency, and near-perfect uptime.
We led the modernization strategy and architecture governance: an API gateway and event-driven services that decoupled customer-facing apps from the legacy core, a CI/CD and automated-testing standard that made frequent releases safe, and a compliance-by-design framework agreed with risk and audit teams upfront. Delivery was staged to avoid any disruption to live banking operations.
Release cycles fell from six months to roughly two weeks, deployment time dropped by about 90%, and run-rate infrastructure cost fell ~40% through cloud efficiency—with no core-banking outage during the transition. The bank regained ground against digital-first competitors.
“iAastha brought the startup mindset we needed with the enterprise and regulatory rigor our auditors demanded. They didn't just ship code—they changed how our engineering organization works.”
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