Azure Cosmos DB Blog
The latest news, updates and technical insights from the Azure Cosmos DB team
Latest posts
Azure Cosmos DB TV Recap: Supercharging AI Agents with the Azure Cosmos DB MCP Toolkit (Ep. 110)
In Episode 110 of Azure Cosmos DB TV, host Mark Brown is joined by Sajeetharan Sinnathurai to explore how the Azure Cosmos DB MCP Toolkit is changing the way developers build, deploy, and scale AI agents using real application data. As agentic AI systems evolve, one challenge continues to surface: securely and consistently connecting AI agents to operational data—without rewriting integration logic for every platform. This episode takes a deep dive into how the Model Context Protocol (MCP), along with Azure Azure Cosmos DB’s implementation, addresses that challenge. Why MCP Matters for AI Agents At its cor...
Introducing the Azure Cosmos DB Agent Kit: Your AI Pair Programmer Just Got Smarter
The Azure Cosmos DB Agent Kit is an open-source collection of skills that teaches your AI coding assistant (GitHub Copilot, Claude Code, Gemini CLI) expert-level Azure Cosmos DB best practices. Install with one command, get production-ready guidance instantly. The Challenge Every Azure Cosmos DB Developer Faces You're building a new application with Azure Cosmos DB. You've got your data, you've got your queries, but then come the questions that keep you up at night: These aren't trivial questions. Poor decisions here can mean the difference between a blazing-fast application and one that...
Part 1: Building Your First Serverless HTTP API on Azure with Azure Functions & FastAPI
Introduction This post is Part 1 of the series Serverless Application Development with Azure Functions and Azure Cosmos DB, where we explore how to build end-to-end serverless applications using Azure Functions for compute and Azure Cosmos DB for storage. Together, these services allow you to build scalable, event-driven, cost-efficient cloud solutions without managing servers or infrastructure. Throughout the series, you’ll progressively build real application components starting with simple HTTP APIs, adding persistent storage, implementing event-driven patterns using the Cosmos DB Change Feed, and orches...
Azure Cosmos DB Conf 2026 — Call for Proposals Is Now Open
Every production system has a story behind it. The scaling limit you didn’t expect. The data model that finally clicked. The tradeoff you had to make under real-world pressure. The solution that worked—and the lessons you’d pass on to the next team. Azure Cosmos DB Conf 2026 is where those stories get shared. This is a global, developer-first conference focused on real-world engineering with Azure Cosmos DB, Azure DocumentDB, and open-source DocumentDB. It’s about showing how things actually work in production—through real architecture, real code, and live demos—not high-level concepts or marketing ...
Powering Real-Time Gaming Experiences with Azure Cosmos DB for NoSQL
Scenario: When Every Millisecond Counts in Gaming Imagine millions of players logging in at the exact moment a new game season launches. Leaderboards light up, achievements tally, and in-game shops buzz with transactions. In these high-stakes moments, speed and reliability aren’t optional, they’re mission critical. That’s where Azure Cosmos DB with the NoSQL API steps in, powering real-time, global gaming experiences without missing a beat. Why Gaming Needs a Next-Gen Database Modern gaming experiences must withstand massive user surges, where game launches and updates can trigger huge spikes in concurrent p...
Public Preview: Cosmos DB Mirroring in Microsoft Fabric with Private Endpoints
We are very excited to announce the public preview for private endpoint support for Azure Cosmos DB Mirroring with Microsoft Fabric mirroring. This feature allows you to preserve the enhanced network security on your data in Cosmos DB from virtual networks or private endpoints, allowing you to seamlessly replicate your operational data in Cosmos DB using Mirroring into your Fabric Workspaces. Configuring Mirroring with Private Endpoints The process for configuring Mirroring on your Cosmos DB accounts with private endpoints during our preview requires multiple steps. To see these steps in detail...
Build AI Tooling in Go with the MCP SDK – Connecting AI Apps to Databases
A hands‑on walkthrough of building MCP servers that can plug AI applications into Azure Cosmos DB The Model Context Protocol (MCP) has established itself as the ubiquitous standard for connecting AI applications to external systems. Since its release, there have been implementations across various programming languages and frameworks, enabling developers to build solutions that expose data sources, tools, and workflows to AI applications. For Go developers, however, the journey to an official MCP SDK took longer (compared to other SDKs like Python and TypeScript). Discussions and design/implementation w...
How Azure Cosmos DB Powers ARM’s Federated Future: Scaling for the Next Billion Requests
The Cloud at Hyperscale: ARM’s Mission and Growth Azure Resource Manager (ARM) is the backbone of Azure’s resource provisioning and management, orchestrating billions of daily requests from customers around the globe. ARM manages all resources for Azure: VMs, Storage, Databases, etc. As Azure’s reach expands and customer expectations rise, ARM’s architecture must not only keep pace—it must set the pace for cloud-scale reliability, agility, and innovation. In recent years, ARM has seen its request volume surge at an exponential rate, reaching unprecedented levels that continually redefine the boundaries of c...
Unlock the power of distributed graph databases with JanusGraph and Azure Apache Cassandra
Connecting the Dots: How Graph Databases Drive Innovation In today’s data-rich world, organizations face challenges that go beyond simple tables and rows. Whether it’s uncovering hidden relationships in social networks, detecting fraud, or powering recommendation engines, graph databases offer a unique way to model and analyze complex connections. JanusGraph, an open-source graph database, combined with Azure Managed Instance for Apache Cassandra, provides a scalable, secure, and flexible foundation for building graph-powered applications making it easier for teams to tackle problems that traditional database...