Cloud-native migration of legacy banking system with zero customer downtime using strangler-fig pattern. Implemented FIDO2 passwordless authentication for PSD2 compliance. Microservices decomposition eliminated cross-domain locking, cutting transaction time 50%.
🎯 Overview
AION’s platform modernizes branchless banking with secure, compliant microservices. Phishing-resistant FIDO2 replaces password authentication without SMS infrastructure. Live transaction routing during migration ensures zero service interruption while rebuilding legacy monolith.
🛠️ Tech Stack
- C#: Financial transaction services with strong typing reducing compliance risk.
- Python: ETL pipelines migrating historical transaction records and data processing.
- FIDO2: Passwordless authentication satisfying PSD2 Strong Customer Authentication.
- AWS: CloudTrail for immutable audit logs, RDS for compliance-auditable infrastructure.
📈 Key Features
- FIDO2 passwordless authentication eliminating phishing-vector credential attacks
- Strangler-fig migration pattern enabling zero-downtime legacy system replacement
- Microservices architecture removing transaction processing bottlenecks
- PSD2 compliance maintained throughout migration
- Immutable audit trails for financial transactions and access logs