Client: Global retail chain (anonymised) — 4,000+ employees across 12 countries.

Challenge: Fragmented on-premises infrastructure with high operational overhead and inconsistent disaster recovery posture.

Solution: Designed a hybrid multi-cloud architecture spanning AWS and Azure, with a centralised network hub, unified identity plane (Entra ID), and automated failover policies.

Key Technical Decisions:

• Hub-and-spoke VNet/VPC topology to contain blast radius
• Infrastructure-as-Code (Terraform) for repeatable, auditable deployments
• Zero-trust network access replacing legacy VPN estate

Business Impact: 40% reduction in infrastructure operational cost, RTO reduced from 8 hours to under 30 minutes.