What is Elastic/OpenSearch?

Elasticsearch is a distributed, RESTful search and analytics engine capable of solving a growing number of use cases. As the heart of the Elastic Stack, it centrally stores your data for lightning fast search, fine‑tuned relevance, and powerful analytics that scale with ease. OpenSearch is an open-source fork of Elasticsearch. It's commonly used for log analysis, full-text search, security information and event management (SIEM), observability, and business analytics.