Database Migration
Large-Scale Cross-Account Database Migration Platform — AWS DMS
Amazon · Devices & Services FinTech · 2025
Designed and led a large-scale, standardized migration platform that consolidated production data across Amazon's FinTech organization — moving 9 relational database clusters and 2 data warehouse clusters across 11 AWS accounts and multiple regions into a governed target environment. Built on AWS Database Migration Service (DMS) with full-load plus change-data-capture (CDC) replication for continuous, low-downtime cutover, backed by automated row-level data validation to guarantee parity between source and target.
9RDS clusters
2Data warehouses
11AWS accounts
MultiRegions
Source DBs (9 RDS · 2 DW)
→
AWS DMS (full-load + CDC)
→
Data validation
→
Governed target (multi-region)
Highlights
- Migrated a large-scale production estate — 9 relational database clusters and 2 data warehouse clusters across 11 AWS accounts and multiple regions.
- Replaced ad-hoc, manual migrations with a repeatable, auditable framework for cross-account, cross-region data movement.
- Used AWS DMS full-load + CDC to replicate continuously and keep cutover downtime minimal.
- Automated row-level data validation to verify source-to-target parity and catch drift before cutover.
- Added CloudWatch alarms to monitor replication lag and task health for production reliability.