.NET & AI Newsletter 03/2026

This is my 3rd newsletter on AI and .NET topics šŸš€ focussing on AI use cases, software architecture, and production-grade patterns.

If you’re working hands-on with .NET, AI, or relevant enterprise architectures, feel free to connect šŸ‘‹, follow šŸ””, or jump into the discussion.

• GitHub Copilot SDK enters technical preview, expanding agent architecture options: The GitHub Copilot SDK was released in technical preview during the past week, enabling developers to embed the same agentic runtime that powers Copilot CLI into any application, including .NET workloads. This SDK encapsulates complex concerns such as planning, multi‑model routing, tool invocation, and the agent execution loop behind a programmable interface, reducing the need to build custom orchestrators from scratch and accelerating reliable agentic application development.

šŸ”— https://github.blog/news-insights/company-news/build-an-agent-into-any-app-with-the-github-copilot-sdk/?utm_source=chatgpt.com

• Microsoft Agent Framework’s GitHub integration advances multi‑provider agent design: Official documentation now highlights integration between the Microsoft Agent Framework and the GitHub Copilot SDK, allowing developers to build agents that leverage Copilot capabilities (streaming, function invocation, MCP integration) within the unified agent abstraction. Architecturally this signals a move toward provider‑agnostic agent systems where Copilot is a composable building block, lowering integration complexity and enabling richer multi‑agent workflows with consistent patterns.

šŸ”— https://devblogs.microsoft.com/semantic-kernel/build-ai-agents-with-github-copilot-sdk-and-microsoft-agent-framework/

• Agent Framework evolves on GitHub with .NET‑specific enhancements: Recent updates to the Microsoft Agent Framework repository include .NET‑oriented improvements such as GitHub Copilot agent implementations, multi‑agent group chat support, and sample orchestrations, reflecting real progress in the framework’s ecosystem usability. While still preview quality and subject to potential breaking changes, these enhancements point toward a more robust feature set for .NET architects planning agentic systems, particularly around orchestration patterns and multi‑agent coordination.

šŸ”— https://github.com/microsoft/agent-framework/releases