Amazon OpenSearch Service now supports OpenSearch version 3.3

You can now run OpenSearch version 3.3 in Amazon OpenSearch Service. OpenSearch 3.3 introduces several improvements in areas like search performance, observability and new functionality to make agentic AI integrations simpler and more powerful. This launch includes several improvements in vector search capabilities. First, with [agentic search](https://docs.opensearch.org/latest/vector-search/ai-search/agentic-search/index/), you can now achieve precise search results using natural language inputs without the need to construct complex domain-specific language (DSL) queries. Second, batch processing for [semantic highlighter](https://docs.opensearch.org/latest/search-plugins/searching-data/highlight/#the-semantic-highlighter) improves performance by reducing overhead latency and improving GPU utilization. Finally, enhancements to Neural Search plugin make semantic search more efficient and provide optimization options for your specific data, performance, and relevance needs. This launch also introduces support for Apache Calcite as default query engine for PPL that delivers optimization capabilities, improvements to query processing efficiency, and an extensive library of new [PPL commands and functions](https://github.com/opensearch-project/sql/blob/main/docs/user/ppl/index.rst). Additionally, this launch includes enhancements to the approximation framework that improve the responsiveness of paginated search results, real-time dashboards, and applications requiring deep pagination through large time-series or numeric datasets. Finally, workload management plugin now allows you to group search traffic and isolate network resources. This prevents specific requests from overusing network resources and offers tenant-level isolation. For information on upgrading to OpenSearch 3.3, please see the [documentation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html). OpenSearch 3.3 is now available in all AWS Regions where Amazon OpenSearch Service is available.