What are the major difference between ElasticSearch and OpenSearch?

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We are planning to leverage OpenSearch for the XDR kind of project. We want to leverage most of the major features like Alerting, Detection, Machine Learning for Anomaly Detection, etc. So, I want to know that, are there any downsides of using OpenSearch instead of Elasticsearch for this particular use case.

I also didn’t find any proper comparison between Elasticsearch vs OpenSearch over the internet. So, can someone please provide the link or resource where I can have a detailed comparison?

elasticsearch opensearch
1 Answers

OpenSearch is provided by AWS is it a kind of forked of ElasticSearch solution. Here you have the feature provided by OpenSearch. Your feature requests are present on this list.

To have more details and a nuanced point of view, you have to read this post provided by ElasticSearch.

And a paper that make a part of comparaison.

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