Upgrade pages for moving between supported 2.4.x release lines, switching search engines and applying security patches, based on Adobe's lifecycle, release schedule and upgrade guide.
Getting off 2.4.6, 2.4.5 or 2.4.4 now that their standard support has ended: choosing 2.4.8 or 2.4.9 as the target, PHP and database jumps, extension replacements, staged test runs and what an unsupported store means for PCI DSS.
Planning the move from 2.4.7 before its May 31, 2027 end of support: PHP 8.3 to 8.5, Elasticsearch to OpenSearch 3, MariaDB or MySQL changes, Valkey, extension and theme compatibility, and a rehearsed cutover.
Moving from 2.4.8 to 2.4.9: PHP 8.4 to 8.5 and Symfony 7.4 LTS, OpenSearch 3 instead of Elasticsearch, newer MariaDB and Valkey versions, composer require-commerce steps and regression testing of checkout and integrations.
Replacing Elasticsearch with OpenSearch ahead of 2.4.9, which lists only OpenSearch 3: provisioning the new cluster, switching the catalog search engine setting, full reindexing, search relevance checks and rollback.
Applying Adobe security patch releases and individual security patch files between full upgrades: monitoring bulletins, testing and deploying quickly, the PCI DSS patch timeframe for critical fixes, and how Mage-OS ports the same fixes.
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