# What is OpenSearch Cluster Database?

## **What is OpenSearch Cluster Database?**

**OpenSearch Database** is a data search and analytics platform developed from Elasticsearch. This platform allows storing, searching and analyzing data in real-time, suitable for applications such as log analytics, system monitoring and text search.

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## How does OpenSearch work as a Vector Database?

Currently, vDB supports deploying **OpenSearch** as a **Vector Database**, meaning you can use it for **approximate search (k - Nearest Neighbor - kNN)** on vector embeddings by integrating the kNN plugin on your OpenSearch Cluster. This is a common approach to building vector search systems for **AI/ML, NLP, Recommendation Systems, or Semantic Search**.

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