What was the situation?
Société Générale's BU MassMarketing ran on owned datacenters, carrying fixed infrastructure cost and limited elasticity.
What did ARCHITEKT do?
As local-entity CTO at Tata Consultancy Services, Erwan Deschamps led the migration from datacenters to AWS, re-basing the estate on cloud-based and API-based application patterns.
What changed, measurably?
The BU MassMarketing estate moved onto cloud and API-based services, and total cost of ownership fell by 37%.
Société Générale’s BU MassMarketing left its owned datacenters for AWS without re-writing the business, so the estate ran on cloud and API-based services while total cost of ownership came down by 37%.
How does a bank move a business unit to the cloud?
The BU MassMarketing estate was re-based on cloud-based and API-based application patterns rather than lifted as-is, so infrastructure cost turned elastic instead of fixed, which is what cut total cost of ownership by 37%.