Is dense_vector field available in AWS Elasticsearch Service?

Elastic Stack Elasticsearch
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I would like to use dense_vector field (https://www.elastic.co/guide/en/elasticsearch/reference/current/dense-vector.html) while it seems to be contained in X-Pack.

Is it available in AWS Elasticsearch Service too?

P.S.
I do not fully understand difference between ES OSS and Basic.
Does AWS ES Service use OSS edition? (then it does not contain dense_vector)
https://www.elastic.co/subscriptions

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Yes, AWS Elasticsearch serviceis based on the OSS distribution so does not include X-Pack features. If you need this functionality Elastic Cloud does come with X-Pack features.

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Thank you.
I heard X-Pack is now OSS too (https://www.elastic.co/blog/doubling-down-on-open).
Still doesn't AWS ES contain dense_vector feature?

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As described in the blog post you linked to the code is open and available on GitHub, but is not licensed under an OSS Apache 2.0 license. X-Pack is therefore not OSS and not part of the OSS distribution. A lot of X-Pack features can be used for free with a Basic license if you have the default distribution while other features require a hoigher level commercial license.

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