Migrating a financial-data SaaS platform off GCP in about a week

The problem

The platform ran across two sprawling GCP projects with self-managed Elasticsearch and OpenVPN, 500GB of PostgreSQL data, and 7TB of storage — creating operational overhead and a growth ceiling.

What changed

• >Zero-downtime cutover; full data integrity validated
• >~1-week end-to-end migration
• >Single consolidated AWS foundation replacing dual-GCP sprawl