OpenSearch is a fully open-source search and analytics engine. It’s designed for indexing, searching, and analyzing large volumes of data in near real time. Most teams use it for application search, log analytics, security analytics, or observability workloads.
It started as a community-driven fork of Elasticsearch and Kibana and is now governed by the OpenSearch Software Foundation under the Linux Foundation.
If you want powerful search and analytics without restrictive licenses or forced SaaS pricing, OpenSearch is a strong option. You control where it runs (self-hosted or managed), how it scales, and how data is stored. It’s especially valuable for engineering teams, platforms, and enterprises that care about cost predictability and avoiding vendor lock-in.
OpenSearch runs as a distributed cluster that indexes JSON documents and exposes a REST API for querying. It includes OpenSearch Dashboards for visualization and exploration. Core functionality is extended through plugins (security, alerting, anomaly detection, SQL support, ML features).
