Amazon Elasticsearch Service now lets you easily upgrade your Elasticsearch clusters to newer versions without any downtime, using in-place version upgrades. With this new feature, you no longer need to go through the hassle of taking a manual snapshot, restoring it to a new cluster running the newer version of Elasticsearch, and updating all of your endpoint references. Instead, you can easily trigger the in-place version upgrade and Amazon Elasticsearch Service takes care of all the necessary steps in the background, ensuring that your cluster continues to operate while the upgrade is in process.