Kibana streams API
Streams provide a unified data management layer for ingestion, routing, and processing. There are three stream types: * **Wired** streams are managed by Kibana. They route documents to child streams based on field conditions and support custom field mappings and processing steps. * **Classic** streams map to existing Elasticsearch data streams. You can add processing steps to classic streams without changing their underlying index template. * **Query** streams are virtual aggregations backed by an ES|QL expression. They aggregate data from multiple streams into a single logical view without duplicating documents.