Elastic Company announced that it is about to change one of the open source license agreements of Elasticsearch and Kibana-Apache License 2.0, changing the Apache License 2.0 to a dual licensing model, namely Server Side Public License (SSPL) + Elastic License, users can choose which suits them License agreement for usage scenarios.
Currently Elasticsearch and Kibana use the following three open source license agreements :
(i) Apache License 2.0
(ii) Apache License 2.0 compatible license
(iii) Elastic License
This change only affects the source code that uses Apache License 2.0, and the parts unrelated to Apache License 2.0 remain unchanged as in the past.
Elastic Company stated that this license agreement change has no effect on most community users who use the default release version for free, nor will it affect their Elastic Cloud customers or self-managed software customers. It mainly restricts cloud service providers from giving back In this case, Elasticsearch and Kibana are provided as a service to others to use to protect Elastic's continued investment in developing free and open products.
This open source license agreement change will be effective for all maintenance branches of Elasticsearch and Kibana. Starting from the upcoming version 7.1, the source code of Elasticsearch and Kibana using Apache License 2.0 will change the open source license to SSPL + Elastic License dual license. .
SSPL is a source-available license agreement created by MongoDB , which aims to reflect open source while protecting products against cloud vendors, preventing cloud vendors from providing open source products as services without giving back. SSPL allows free and unrestricted use and modification of the product source code. The simple requirement is that if you provide the product as a service to others, you must publicly release any modifications and the management source code under the SSPL.