= ElasticSearch = * Opensource until version 7.10.2 (2021) * Latest version 8.8 (2023) == 2023 - Elastic License 2.0 (ELv2) == * https://www.elastic.co/licensing/elastic-license * Laymen's understanding of it. * You can use it but not provide/re-sell elastic as a product * "Limitations: You may not provide the software to third parties as a hosted or managed service, where the service provides users with access to any substantial set of the features or functionality of the software."