Amazon: OpenSearch, renamed Open Distro for Elasticsearch

 Introducing OpenSearch | AWS Open Source Blog

OpenSearch project, a community-driven, open source fork of Elasticsearch and Kibana

This project includes OpenSearch (derived from Elasticsearch 7.10.2) and OpenSearch Dashboards (derived from Kibana 7.10.2). 

Additionally, the OpenSearch project is the new home for our previous distribution of Elasticsearch (Open Distro for Elasticsearch), which includes features such as enterprise security, alerting, machine learning, SQL, index state management, and more. All of the software in the OpenSearch project is released under the Apache License, Version 2.0 (ALv2). 

the code for OpenSearch and OpenSearch Dashboards on GitHub

OpenSearch.org

... plan to rename ... Amazon Elasticsearch Service to Amazon OpenSearch Service.