Distributed search and analytics engine for storing, searching, and analyzing large volumes of data quickly. Like having a super-fast librarian that can instantly find any information in millions of documents.
E-commerce sites use Elasticsearch to provide instant product search results from catalogs with millions of items.
Elasticsearch is a search/analytics engine. AWS and OCI offer managed OpenSearch (a fork of Elasticsearch) for similar log/search workloads. Azure AI Search and Vertex AI Search are managed search services focused on building application search experiences; they are not Elasticsearch but can serve similar use cases (site/app search) with different APIs and features.