Elasticsearch is an open-source search and analytics engine that allows users to perform real-time data analysis on large datasets. It is built on top of the Apache Lucene search library and provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and JSON documents. Elasticsearch can be used for a variety of use cases, including log aggregation, website search, e-commerce product search, and security analytics. It is highly scalable, fault-tolerant, and can handle high volumes of data in near real-time. Elasticsearch is often used in conjunction with other technologies, such as Kibana (for data visualization) and Logstash (for data processing).
