
About Azure Cosmos DB
Azure Cosmos DB is a fully managed NoSQL database service from Microsoft Azure. It stores data as documents and supports vector search for applications that use AI features.
What it does
You create an account and a container in Azure, then read and write documents through the native JSON API. The service scales throughput up or down, and it can replicate data across regions for availability. Vector search and hybrid search help applications find relevant items in the stored data.
Key features
- Store JSON documents with a native NoSQL API
- Run vector search for AI apps
- Scale throughput with dynamic autoscale
- Create global secondary indexes for faster queries
- Manage tenant accounts with shared throughput pools
Who it's for
Cosmos DB suits developers and enterprises that build apps on Azure and need low latency at scale. Teams that add copilots or agents to an existing product also use it.
Pricing and good to know
Azure offers a free trial for Cosmos DB, and usage is billed by throughput and storage after that. Costs depend on the features and regions you choose. Plan your partition keys carefully, because the choice affects performance and cost over time.
Highlights
- Store JSON documents with a native API
- Run vector search for AI features
- Scale throughput with dynamic autoscale
- Global secondary indexes for faster queries












