Aurora MySQL 8.4 supports community MySQL 8.4.7 compatibility and adopts version numbering consistent with upstream MySQL releases, simplifying version tracking for users. The platform manages patching actively, aiming to release major versions within 12 months of official MySQL LTS updates.
Security improvements include mandatory TLS 1.2/1.3 enforcement for new clusters and default use of caching_sha2_password authentication. The update also adds automated upgrade prechecks to help identify compatibility issues predeployment. The version is broadly available and supports in-place upgrades or migration from external MySQL sources.
Source & further reading
Amazon Aurora MySQL 8.4 is now generally available ↗Source published 2026-05-21. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.