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We’re excited to announce the preview of Azure Cosmos DB fleets. Azure Cosmos DB fleets address common challenges that developers face when building and managing multi-tenant or Software as a Service (SaaS) applications. Today, many SaaS providers using Azure Cosmos DB isolate each tenant in a separate database account to meet strict performa...

The countdown to innovation has begun: Day 1 of Microsoft Build 2025 bought several new announcements, demos, and live coding sessions to in-person and online audiences, showcasing the potential of cloud-native and AI-driven applications. Azure Cosmos DB is at the forefront of this innovation. From powering multi-agent applications and unlocking hi...

At Microsoft Build 2025, we're excited to announce general availability of search capabilities for Azure Cosmos DB, including full-text and hybrid search, enabling developers to build highly performant, scalable, and intelligent applications. We're also introducing new preview enhancements such as multi-language support and fuzzy search, further en...

Building modern, scalable applications often comes with the challenge of managing and scaling your database infrastructure. That’s exactly why we built Azure Cosmos DB – to provide a fast, flexible NoSQL database service that frees you from the operational heavy lifting. With automatic scaling, built-in high availability, and consistent single-...

Global secondary indexes for Azure Cosmos DB—now in Public Preview—make it easier to query data efficiently, especially as your datasets grow.  Distributed databases like Azure Cosmos DB scale with dataset growth by partitioning data across multiple physical machines. When your queries include the partition key, the client routes them directly ...

Announcing Per Partition Automatic Failover for Azure Cosmos DB Today, we’re excited to announce the preview of Per Partition Automatic Failover (PPAF) for Azure Cosmos DB, a significant improvement to our single-region write accounts that boosts availability and resilience. If you rely on Azure Cosmos DB to be “always on” for your mission-critica...

We’re announcing new integrations between Azure Cosmos DB and the Azure AI ecosystem: the Azure AI Foundry Connection for Azure Cosmos DB and bring-your-own thread storage in Azure AI Agent Service. These capabilities make it easier for developers to build enterprise-ready agentic applications using their own data stored in Azure Cosmos DB. Azure ...

We’re thrilled to announce the latest refresh of Fabric Mirroring for Azure Cosmos DB, now available with several powerful new features that enhance your data analytics infrastructure. This update significantly improves the experience, making it easier than ever to replicate your Azure Cosmos DB data into OneLake in Microsoft Fabric—giving you more...

Vector search with Azure Cosmos DB  In Part 1 and Part 2 of this series, we explored vector search with Azure Cosmos DB and best practices for scaling it to 1 billion vector datasets while maintaining low query latency. In Part 3, we saw how we can create efficient sharded DiskANN indices for multi-tenant apps.  In Part 4, we’ll look at the eff...

Title: General Availability for Data API in vCore-based Azure Cosmos DB for MongoDB We’re excited to announce the general availability of the Data API for vCore-based Azure Cosmos DB for MongoDB! Overview The Data API is a RESTful HTTPS interface that enables developers to interact with their MongoDB data hosted in vCore-based Azure Cosmos DB...