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A secure enterprise chat with React, .NET 10 and Microsoft Foundry

The article targets the common mistake of calling the model straight from the front end with the API key in JavaScript, and instead wires React to a .NET 10 Minimal API that talks to Microsoft Foundry without any keys. It walks through Entra ID authentication, a server-owned system prompt, Server-Sent Events streaming and IP-based rate limiting as the protections that separate a demo from a product.

Building AI Agents in C# with Microsoft Agent Framework

Microsoft Agent Framework lets .NET developers turn a console app into an AI agent that can call tools with only a few lines of code. The article walks through creating the agent, wiring C# functions as tools, testing it locally, and moving the same code to production on Microsoft Foundry Hosted Agents.

Securing APIs with Microsoft Entra ID: scope, client and token validation

A practical guide to protecting an API with Microsoft Entra ID: registering the API, exposing a scope, and registering the client that requests it. It walks through a .NET Core API using Microsoft.Identity.Web, a React client using MSAL, and a .NET web app calling a downstream API. The same token checks apply to any backend stack.

Convert Azure cloud-native .NET code to AWS with AWS Transform

AWS Transform for .NET can convert Azure cloud-native code, such as Azure SDK calls, to equivalent AWS services. The AWS blog walks through moving an Azure Functions queue-triggered function to AWS Lambda with SQS and DynamoDB, then customizes a larger transformation that redirects Cosmos DB to Amazon S3. It is a useful reference for .NET teams planning a cross-cloud migration.

Azure SDK October 2026: Azure Core, managed identity and Cosmos DB for Rust 1.0.0

The October 2026 Azure SDK release highlights Azure Core 1.63.0 for .NET, Identity updates for Python and Java, and the first stable Cosmos DB for Rust 1.0.0. The authentication changes affect how DefaultAzureCredential behaves in production. Teams on the Cosmos DB Rust preview also get concrete upgrade steps.

When low-level .NET performance optimization is worth the complexity

Daniel Marbach draws on his pull requests to the Azure .NET SDK to explain when low-level performance work pays off. He argues that in library code, small allocation decisions multiply across every caller, yet added complexity carries a maintenance cost. The post offers a practical decision framework for library authors and application developers alike.

How the Intune team moved a .NET Framework service to .NET 8 with Copilot

The Microsoft Intune team used the GitHub Copilot modernization agent to move an enrollment service from .NET Framework 4.7.2 to .NET 8 while hosting it on AKS. The author reports cutting one library's migration from about six weeks to one and a half. The most useful part is the working method: an editable migration plan and progress file kept in the repository, and a clear account of where the agent failed on internal libraries.

Inside Azure SQL Hyperscale: how the Socrates paper split the database

A walkthrough of the 2019 Socrates paper behind Azure SQL Database Hyperscale. The design splits compute, transaction log, page servers and storage into separate tiers, which is why backups, restores and adding replicas no longer scale with database size. Developers running or evaluating Hyperscale get a clear view of the architecture behind it.

Where a .NET 8 repo hides its version before the November 10 end of support

.NET 8 and .NET 9 both leave support on November 10, 2026, and the in-process model for Azure Functions ends the same day. The author argues that the target framework is rarely a one-line change, because version pins hide in Directory.Build.props, global.json, Dockerfiles, CI workflows and Functions setup.

Building enterprise apps with SharePoint Embedded: limits, throttling and permissions

SharePoint Embedded guidance for moving apps to production has been updated. It covers container and tenant limits, handling throttling, narrower Graph permissions and Office co-authoring. For developers building on the Microsoft 365 platform, it offers concrete planning and security points.

Safe Key Rotation for Azure Cosmos DB is now generally available

Azure Cosmos DB's Safe Key Rotation now shows the last-used timestamp for each account key and can be turned on from the Features blade in the Azure portal. Teams can confirm whether a key is still in use before regenerating it or disabling local authentication. That lowers the risk of an outage caused by rotating a key that a forgotten application still depends on.

Bring Your Own Model to the GitHub Copilot SDK with C#

The GitHub Copilot SDK lets you keep GitHub's agent runtime while routing model inference to your own Microsoft Foundry or Azure OpenAI deployment through BYOK. The article walks through a .NET 10 console sample that configures ProviderConfig, authenticates with Microsoft Entra ID or an API key, and sends one prompt.