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Top .NET Blog Posts of 2025

Let's look back at the most-read .NET blog posts published in 2025, from .NET 10 to AI, performance, and developer tooling.
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Latest posts

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Jan 8, 2026
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Scaling AI Agents with Aspire: The Missing Isolation Layer for Parallel Development

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tamir dresher
Scaling AI agent development with Aspire and Git worktrees by solving port conflicts through automatic port allocation scripts and an MCP proxy layer that enables parallel AI agents to orchestrate and debug complete distributed systems simultaneously.
Aspire Blog
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Jan 8, 2026
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Using Active Accessibility to find out where the Windows caret is

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Raymond Chen
It's old and rather simple, but we like simple.
The Old New Thing
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Jan 7, 2026
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The Realities of Application Modernization with Agentic AI (Early 2026)

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jkordick
How to read this article This article is a reflection based on hands-on experience and is written for engineers and technical leaders who are facing a new application modernization effort and want to build a realistic mental model before reaching for tools. If you are new to...
All things Azure
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Jan 7, 2026
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Secure and Intelligent: Queryable Encryption and Vector Search in MongoDB EF Core Provider

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Rishit,
Luce
The MongoDB EF Core provider now supports Queryable Encryption and Vector Search. Learn how to encrypt sensitive data while querying it and build AI-powered semantic search applications directly with EF Core.
.NET Blog
Public Preview: Cosmos DB Mirroring in Microsoft Fabric with Private Endpoints
Jan 7, 2026
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Public Preview: Cosmos DB Mirroring in Microsoft Fabric with Private Endpoints

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Mark Brown
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...
Azure Cosmos DB Blog
Build AI Tooling in Go with the MCP SDK – Connecting AI Apps to Databases
Jan 7, 2026
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Build AI Tooling in Go with the MCP SDK – Connecting AI Apps to Databases

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Abhishek Gupta
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...
Azure Cosmos DB Blog
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Jan 7, 2026
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How can I find out where the Windows caret is?

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Raymond Chen
You'll have go to a larger scope.
The Old New Thing
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Jan 6, 2026
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XAML Studio is now Open Sourced

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Michael Hawker
XAML Studio Open Sourced It's been over 8 years since what became XAML Studio was started. And from nearly the beginning, it was always envisioned as an open-source project… So, it's with great pleasure that I'm happy to announce that day has finally come! XAML Studio is now an...
#ifdef Windows
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Jan 6, 2026
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Semantic Reranking with Azure SQL, SQL Server 2025 and Cohere Rerank models

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Davide Mauri
Supporting re‑ranking has been one of the most common requests lately. While not always essential, it can be a valuable addition to a solution when you want to improve the precision of your results. Unfortunately, there isn’t a universal, standardized API for a “re‑rank” call...
Azure SQL Devs’ Corner