I always like the release notes from here https://www.elastic.co/guide/en/elasticsearch/reference/7.9/release-notes-7.9.0.html https://www.elastic.co/guide/en/e

I always like the release notes from here https://www.elastic.co/guide/en/elasticsearch/reference/7.9/release-notes-7.9.0.html https://www.elastic.co/guide/en/elasticsearch/reference/7.9/...