Starting today, Amazon Aurora MySQL-Compatible Edition 8.4 will support MySQL 8.4.8. In addition to several security enhancements and bug fixes, Aurora MySQL 8.4.8 includes several improvements, such as support for post-quantum TLS (PQ-TLS) key exchange, transaction timeout, multi-source replication, and delayed replication. PQ-TLS provides you with post-quantum cryptography options for encrypting your data in-transit.