Magento 2 Elasticsearch vs OpenSearch: Which to Use in 2026

Magento 2.4.x removed MySQL-based catalog search and made Elasticsearch (or OpenSearch) mandatory. If you're still running MySQL search, you've likely hit Magento's hard block. Here's everything you need to know about the switch. Elasticsearch vs. OpenSearch: which one? OpenSearch is a community fork of Elasticsearch 7.10, maintained by Amazon after the license change. For Magento, they're functionally identical — Magento's opensearch engine adapter is based on the Elasticsearch adapter. Choose