Cloud Migrations → Smooth migrations

Helping a European fintech company modernize by migrating from on-prem to AWS

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Starting Point

The client was operating a monolithic on-premise infrastructure across multiple environments. Their workloads ranged from internal tools to production-facing services, with increasing maintenance overhead, limited scalability, and inconsistent deployment pipelines.

The Challenge

They needed to modernize without risking downtime, ensure data consistency throughout the transition, and reduce future infrastructure overhead. Security and compliance were also critical due to the financial nature of their business.

Our Approach

We designed and executed a phased migration strategy:

Assessed all workloads and grouped them into migration waves based on criticality and dependencies.
Established secure, scalable landing zones in AWS (VPCs, IAM, SSO).
Re-platformed some services into containers while others moved as-is (EC2 with automation via Terraform).
Implemented CI/CD pipelines for all workloads, integrated with GitLab
Ensured observability from Day 1 using Prometheus/Grafana/AlertManager and CloudWatch.
Provided detailed documentation and knowledge transfer sessions.

Tech Stack

AWS (EC2, VPC, S3, IAM, CloudWatch, RDS), Terraform, GitLab CI, Docker, Prometheus, Grafana

The Outcome

Zero downtime throughout the migration period.
40% reduction in infrastructure costs within the first 3 months (partially due to autoscaling and better resource allocation).
Enabled faster deployments with improved developer confidence.
Provided a secure, auditable, and scalable platform to support their growth across new region