This recommendation recommend on RI purchase and is based on customer historical usage.

This recommendation identifies Elasticsearch clusters that have been idle for an extended period and can be stoped or deleted.

This recommendation identifies OpenSearch/Elasticsearch domains that are either approaching the start of Extended Support charges or are already incurring them, helping you avoid unexpected costs and plan timely version upgrades. By default, the recommendation is triggered 90 days before Extended Support fees take effect, offering early visibility. You can customize this lead time through the recommendation preferences to receive notifications even earlier, based on your operational needs.