Cloud & Infrastructure Practical By Samson Tanimawo, PhD Published May 26, 2026 4 min read

RDS vs Aurora: 2026 Decision

Aurora is faster, more durable, more expensive. The decision rule based on workload and the cases where RDS still wins.

When Aurora wins

High-throughput OLTP. Aurora's storage layer outperforms vanilla MySQL/Postgres.

Multi-region durability matters. Aurora Global Database is mature.

Tight cost constraints. RDS is cheaper at the same instance class.

Specific Postgres extension needs. Aurora supports a subset.

Bursty, low-volume workloads. Auto-scales to zero between bursts.

Cost: scale-to-zero is real but cold-start latency is meaningful.