Elasticsearch and Kibana added a brand new query language: ES|QL — coming with a new endpoint (_query) and a simpler syntax. It lets you refine your results one step at a time and adds new features like data enrichment and processing right in your query. And you can use it across the Elastic Stack — from the Elasticsearch API to Discover and Alerting in Kibana. But the biggest change is behind the scenes: Using a new compute engine that was built with performance in mind. Join us for a quick overview and a look at syntax and internals.

Migrating a large mission-critical Elasticsearch cluster to the latest version of Elasticsearch came with quite some challenges. In this talk, we will highlight some surprises and learnings from this process.