Microsoft has rolled out the September 2025 Visual Studio update, introducing a fully integrated agentic AI experience. From code generation and modernization to profiling and code reviews, these features are designed to transform the way developers build and optimize applications.

Here’s what’s new:

Profiler Agent
No need to be a profiling expert—Profiler Agent uses AI to analyze CPU usage, memory, and runtime behavior. It highlights performance bottlenecks, creates or optimizes BenchmarkDotNet benchmarks, and suggests fixes in a guided loop—all seamlessly integrated with GitHub Copilot.
.NET Application Modernization
Upgrade your .NET apps to the latest versions and migrate to Azure faster with the Copilot-powered modernization agent, designed to streamline upgrades and migrations.
MCP Prompts, Resources & Sampling
Model Context Protocol (MCP) introduces a standardized way for servers to expose structured prompts, contextual resources, and agentic behaviors—making LLMs more powerful in development environments.
Mermaid Diagram Generation
Visual Studio now supports rendering Mermaid diagrams directly in the Markdown editor—whether you write the syntax yourself or let Copilot generate it for you.
Smart Code Reviews
GitHub Copilot takes local code reviews to the next level with AI-driven insights that make reviews faster, smarter, and more effective.

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