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Not all model upgrades are upgrades

A new model drops with lower per-token pricing and better benchmarks. You switch. A week later someone asks why the agent is burning 12x more tokens on the same task while producing worse output. We ran 150 agent tasks across 15 scenarios on two models, Claude Sonnet 4.6 and Claude...
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Apr 29, 2026
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Announcing the Private Preview of Cosmos DB Azure RBAC Integration

Sudhanshu Khera
Introduction Managing access to Azure resources often means dealing with two separate permission models: one for management operations and another for data access. For Azure Cosmos DB customers, this split can increase complexity, slow down onboarding, and create confusion around...
Azure Cosmos DB Blog
Apr 29, 2026
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Azure DocumentDB (with MongoDB compatibility) for Banking: A Modern Customer 360 Approach

Srikanth Sridhar
Introduction: Transforming Customer Intelligence in Banking Every day, people interact with their bank across mobile apps, branches, call centers, ATMs, chatbots, and partner ecosystems. Each touchpoint holds a piece of the customer story but rarely the whole picture. For many...
Azure Cosmos DB Blog
Apr 29, 2026
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Announcing Microsoft Desired State Configuration v3.2.0

Jason Helmick
This post announces the General Availability of Microsoft Desired State Configuration (DSC) v3.2.0, with new Windows resources, Bicep gRPC integration, WhatIf support, expression language improvements, and adapter enhancements.
PowerShell Team
Apr 29, 2026
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VSTest is Removing its Newtonsoft.Json Dependency

McKenna Barlow
VSTest is removing its Newtonsoft.Json dependency in .NET 11 and Visual Studio 18.8. Here's who is affected and how to fix it.
.NET Blog
Apr 29, 2026
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Governing MCP tool calls in .NET with the Agent Governance Toolkit

Jack Batzner
Learn how to govern MCP tool calls in .NET with the Agent Governance Toolkit—policy-based access control, security scanning, and response sanitization to reduce risk in AI agent systems.
.NET Blog
Apr 29, 2026
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General Availability: Refresh Token (RT) Transfer to Apple Watch in Microsoft Entra External ID Native Authentication

Sasha Mars
We’re excited to announce the General Availability (GA) of Single Sign-On (SSO) from Native Apps to Embedded Web Views for Microsoft Entra External ID (EEID) Native Authentication. This release marks a major milestone in delivering end-to-end seamless authentication experiences for...
Microsoft Entra Identity Platform
Apr 29, 2026
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SDK-Style Support for Extension Projects

Matt Clark
Starting in Visual Studio 18.5, you can create and build Visual Studio extensions (VSIX) using an officially supported SDK-style project. This brings VSIX projects into the modern build and deployment pipeline, improving incremental build performance and making the build → deploy →...
Visual Studio Blog
Apr 29, 2026
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Developing a cross-process reader/writer lock with limited readers, part 2: Taking turns when being grabby

Raymond Chen
Please, not everybody, everything all at once.
The Old New Thing
Apr 29, 2026
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The New Loop: How Power Pages Builds Software with AI

Priyanshu Agrawal
Introduction When I started writing software professionally in 2015, the tech landscape looked completely different. Tools and frameworks kept evolving since then, but the process of building software barely moved for a decade. That changed in the last couple of months. Here's what has...
Power Platform Developer Blog