Drupal Elastic Search is an open-source search engine that can be used to manage content management systems (CMS) such as Drupal. It comes with many features that make it easy to integrate into your Drupal website
The module is designed with one main goal in mind: “to allow Drupal developers to easily add search capabilities to their websites.” The module does this by using Elasticsearch as a basic mechanism for indexing and searching content. Using Drupal Elastic Search is pretty easy: you just install it, set it up, and start searching! But before you start, I’d advise you to understand in detail all the features of using drupal elasticsearch.