Skip to main content
Financial services

Migrating a Transactional Platform to the Cloud

Migrating a critical transactional platform to the cloud, with no service interruption, in a regulated environment.

99.95% production uptime

The industry and its realities

The financial services institution operates a critical transactional platform handling its clients' daily operations, historically hosted on aging on-premises infrastructure. This platform's availability is directly tied to the institution's ability to serve its clients: any interruption has an immediate operational and reputational impact.

The client’s intent and need

The institution wanted to migrate this platform to cloud infrastructure to gain resilience and scalability, with no service interruption perceptible to clients, while meeting the regulatory requirements specific to the financial sector (data residency, encryption, traceability).

How Nord Numérique addressed the need

Nord Numérique took ownership of designing the target architecture and executing the full migration, with a minimal-interruption cutover strategy rather than a planned service outage.

The steps taken to define the solution

  • Audit of the existing architecture and inter-system dependencies.
  • Designing the target architecture in the cloud environment, including disaster recovery.
  • Security and regulatory compliance review of the proposed architecture.
  • Developing a detailed migration plan with a rollback scenario at every step.
  • Plan for progressively cutting traffic over to the new infrastructure.

Implementing the solution

The migration was executed through infrastructure-as-code provisioning of the target environment, followed by a period of parallel operation (old and new environments active simultaneously) to validate transaction consistency before any real cutover. Traffic was then progressively shifted over, with continuous monitoring and alerting, until the old infrastructure was fully decommissioned.

Challenges encountered

The main challenge was guaranteeing transactional consistency during the parallel-operation period, with no duplicate processing or lost transactions. Regulatory requirements around data residency and encryption also constrained certain cloud architecture choices, and several dependencies on legacy systems had to be mapped before the cutover could be planned with confidence.

Technical, organizational, and legal impacts

Technical impact

New cloud architecture with built-in disaster recovery, replacing end-of-life on-premises infrastructure.

Organizational impact

New operations and monitoring practices for the internal IT team, trained on the new environment.

Legal / compliance impact

Compliance maintained with financial-sector regulatory requirements on data residency and encryption.

The delivered solution and its added value

The transactional platform now runs on resilient cloud infrastructure, with measured production uptime of 99.95% and a scaling capacity that on-premises infrastructure could no longer realistically support.

Measuring client satisfaction

No major incidents have been recorded since going live on the new infrastructure, and the institution has since been able to expand its platform's scope with greater confidence in its ability to absorb transaction volume growth.

Also worth reading

More case studies.

Equipment rental and distribution

Automatically Reconciling Transportation Billing with Operational Data

Automated reconciliation of transportation invoices with operational data (POs, loads, rates) for an equipment rental and distribution company.

-65%

in unjustified transportation billing discrepancies
Equipment rental and distribution

Extending a Document Management Platform to a Second Operating Entity

Extending an existing electronic document management platform (Laserfiche) to a second entity within the group, with separate access and security.
Equipment rental and distribution

Deciding Between Building In-House or Partnering to Automate Customer Payment Collection

Internal feasibility analysis ("make vs. buy") for automating customer payment collection processing, before committing to an external engagement.

-65%

in cost compared to the fully outsourced option
A similar context?

Let’s discuss what this could look like for you.

Describe your context: a senior team member responds to you personally — never a form that lands in a generic queue.

  • Response within 2 business days
  • A conversation with a senior team member, not a sales intermediary
  • No obligation at this stage