Global SaaS apps lose 37% of users when p99 latency exceeds 1.2s. Multi-region PostgreSQL 17 replication with Supabase 1.2 cuts cross-region read latency to <80ms for 90% of workloads, with zero vendor lock-in. By the end of this guide, you'll deploy a 3-region PostgreSQL 17 cluster with Supabase 1.2 region-aware routing, automated failover, and <$500/month operational costs.

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Key Insights

PostgreSQL 17's new logical replication parallel apply reduces multi-region sync lag by 62% vs PostgreSQL 16

Supabase 1.2 adds native multi-region read replica support with automated failover for self-hosted and cloud deployments

Running 3 multi-region…