Amazon OpenSearch Service (successor to Amazon Elasticsearch Service) now supports checking for blue/green deployment when making configuration changes.

You can now check whether a configuration change will require a blue/green deployment from the Amazon OpenSearch Service (successor to Amazon Elasticsearch Service) console or using the Amazon OpenSearch Service APIs. With this new option, you can plan and make configuration changes that require a blue/green deployment when your cluster is not at its peak traffic.

Source:: Amazon AWS