Unity Homes cut SAP infrastructure costs 30% on AWS

Unity Homes is one of East Africa’s flagship property developers. The SAP estate ran the operational backbone — financials, project accounting, materials, the systems a property developer cannot afford to lose. Shinrai delivered the migration to AWS, following the SAP-on-AWS playbook documented across the team’s engagements.

The challenge. The existing SAP environment had reached the point where operational risk — outage exposure, recovery-time uncertainty, hardware-refresh cost — was outpacing the value the on-premises footprint was delivering. The business needed an architecture sized to the workload, with the multi-AZ resilience operational SAP estates require, and a cutover that the operations team could trust.

The approach. Migration sized against SAP’s certified EC2 instance list (per SAP Notes 1656099 and 1928533). Multi-AZ topology with HANA System Replication (HSR) between availability zones. AWS Backup vaults to a separate region for the cross-region DR scenario. A documented, tested rollback plan and a full dress-rehearsal cutover against a non-production environment with realistic data volumes before go-live.

The outcome. SAP-on-AWS estate running in production with the resilience posture the business required. The first Well-Architected Review was scheduled 60–90 days post-go-live, once the workload had stabilised, to surface the right-sizing and cost-optimisation candidates that always appear in the first 30 days after a successful migration.