Elasticsearch is an open source, distributed search and analytics engine built for speed, scale, and AI applications. As a retrieval platform, it stores structured, unstructured, and vector data in real time — delivering fast hybrid and vector search , powering observability and security analytics, and enabling AI-driven applications with high performance, accuracy, and relevance. Elasticsearch is an open-source, distributed search and analytics engine designed to solve complex search and data analysis problems at… Learn Elasticsearch online at your own pace. Start today and improve your skills. Join millions of learners from around the world already learning on Udemy. Elasticsearch is a source-available search engine. It is based on Apache Lucene (an open-source search engine) and provides a distributed, multitenant -capable full-text search engine with an HTTP web interface and schema-free JSON documents. Official clients are available in Java, [2] .NET [3] (C#), PHP, [4] Python, [5] Ruby [6] and many other languages. [7] According to the DB-Engines ranking, Elasticsearch is the most popular enterprise search engine. [8]
