FinTech Modernisation: Zero-Downtime Migration
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FinTech · Cloud Migration · DevOps

FinTech Modernisation: Zero-Downtime Migration

Strangler-fig migration of a Large-scale FinTech monolith to microservices on AWS ECS. Zero downtime. SOC 2 compliant. 60% faster deployment cycles.

Large-scale
Users Platform Migrated
0
Minutes Downtime
60%
Faster Deploy Cycles
SOC 2
Compliance Achieved

The Challenge

A Large-scale FinTech had a 6-year-old PHP monolith that was preventing them from shipping features fast enough to compete. Deployments took 4 hours. Every release required manual testing. Their engineering team was spending 40% of their time on infrastructure incidents rather than product.

The Solution

We used the strangler-fig migration pattern to incrementally extract services from the monolith without requiring a big-bang rewrite. Over 9 months, we extracted 12 microservices, moved the entire infrastructure to AWS ECS (Fargate), implemented GitHub Actions CI/CD, and passed SOC 2 Type II audit.

The Results

9-month migration with zero production downtime

Deployment time reduced from 4 hours to 8 minutes

60% faster feature delivery cycles after CI/CD implementation

SOC 2 Type II certification achieved 6 months after project start

Engineering team now spends 15% of time on infrastructure (down from 40%)

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