At the beginning of 2021 ElasticSearch took the open source search community by surprise when it announced some changes to its licensing model and subsequently highlighted the differences between the ElasticSearch and AWS offerings.
Charlie Hull, Managing Consultant at Open Source Solutions, has been tracking the outcomes of this decision, and very courageously set up and chaired a debate between Elastic Search, Solr and Vespa.
Charlie has published a very good summary of the debate which links to a video recording.
There are two further contributions from Charlie Hull at
OpenSearch – Amazon forks Elasticsearch and the divergence begins