You are using 8.4.3 and you are building on top of it. have you checked the terms & conditions?
OpenSearch is an open source alternative
https://opensearch.org/ https://www.elastic.co/pricing/faq/licensing
We have just used Elastic 8.4.3 for the benchmark. We are not building on top of it. So, I am not sure how do the T&Cs apply. Can you share more?
Open Source means concretely: that you can read the source.
Free and Open source usually means you are free to use it in many ways, sometimes with restrictions or agreements that contributions must be made available. This freedom is the point of contention with ElasticSearch and MongoDB.
Sorry to he pedantic, but terminology is important.
Fortunately Elastic already has an appropriate term for it: source-available software [0], and that's the term Elastic itself uses to define its license in their FAQ [1]
[0] https://en.wikipedia.org/wiki/Source-available_software
[1] https://www.elastic.co/pricing/faq/licensing#what-is-sspl-an...