Elastic 8.9 introduces several new features and enhancements across its security, search, and observability platforms, all built on the Elasticsearch platform. Elastic Security now unifies SIEM, endpoint, and cloud security to improve threat detection and response, and includes the beta release of the Elastic AI Assistant for Security, which aids in analyst investigations. The update to Elastic Search includes a tech preview of Reciprocal Rank Fusion for hybrid search and new integrations like ServiceNow and Dropbox connectors. Elastic Observability offers a tech preview of the Elastic AI Assistant for Observability and aims for significant storage reductions through cost-saving integrations. Core improvements include faster search aggregations, semantic search with dense vector embeddings, and high cardinality aggregations, alongside the tech preview of Elastic’s Learned Sparse Encoder and Reciprocal Rank Fusion for enhanced search relevance. Elastic 8.9 is available on Elastic Cloud, though the release of features is subject to Elastic's discretion.