AWS now lets you pick hybrid ML-KEM key-exchange groups on Aurora PostgreSQL 18 through the ssl_groups parameter, with no reboot. Turn it on for databases holding long-lived data to neutralize harvest-now-decrypt-later collection.

On October 27, 2026, AWS raised Amazon Aurora serverless to a 384 ACU ceiling for PostgreSQL — 768 GiB of memory and 50 percent more capacity — while keeping scale-down to zero. For the bursty workloads of AI agents, this is the clearest signal yet that AWS wants the serverless database to be the default backplane, provided you treat the ACU ceiling as a real capacity decision.

On October 21, 2026, AWS launched On-Demand Capacity Reservations for Amazon Aurora and RDS: reserve compute capacity in one or more Availability Zones, immediately or scheduled 5 to 120 days ahead. It is insurance against “insufficient capacity” errors, not a cost cut — reserved capacity is billed even when no instance is running.

AWS embeds DuckDB inside Aurora PostgreSQL to query operational data and the data lake in a single query, with no ETL pipeline. A turning point for teams that replicated the lake into Postgres.