OpenSearch is derived from which open-source engine?

OpenSearch is derived from Elasticsearch, which is a popular open-source search and analytics engine. This relationship stems from the fact that OpenSearch was created as a fork of the last open-source version of Elasticsearch, specifically version 7.10. This fork was initiated by Amazon Web Services (AWS) in response to changes in the licensing model of Elasticsearch, allowing users to continue utilizing a fully open-source search and analytics suite without restrictions.

Elasticsearch serves as the foundational technology for OpenSearch, meaning that many of the features and capabilities of OpenSearch are directly based on its Elasticsearch roots. This includes functionalities related to full-text search, data visualization, and real-time analytics, among others, which are hallmarks of both technologies. By understanding this connection, one can appreciate OpenSearch as a continuation of the Elasticsearch capabilities while promoting community-driven development and support.