Microsoft Agent Framework 1.0 Is Production-Ready — What It Means for .NET and Python Devs
Microsoft ships the production release of Agent Framework 1.0, unifying AutoGen and Semantic Kernel into a single SDK for multi-agent orchestration.
What Happened
In early April 2026, Microsoft officially shipped Agent Framework v1.0 as a production-ready release. This SDK is the designated successor to both AutoGen and Semantic Kernel, consolidating Microsoft’s fragmented agent developer ecosystem into a single framework.
Key technical specs:
- Supports multi-agent orchestration out of the box
- Full A2A (Agent-to-Agent) communication protocol support
- Native MCP (Model Context Protocol) integration
- Available for both .NET and Python
- Open source on GitHub
The new release model: AutoGen moves to bug-fix only maintenance. Semantic Kernel remains active but focuses on primitives. All new agent development should use Agent Framework.
Why the Consolidation Matters
For the past two years, Microsoft’s agent development story was split three ways. AutoGen (research-origin, multi-agent focus), Semantic Kernel (enterprise-grade, plugin architecture), and experimental frameworks produced overlapping but incompatible approaches to the same problem. Developers had to pick one and hope Microsoft wouldn’t deprecate it.
Agent Framework 1.0 ends that uncertainty. It inherits the best of both — AutoGen’s multi-agent conversation patterns and Semantic Kernel’s enterprise tooling — while adding first-class A2A and MCP support that neither predecessor had.
The A2A + MCP Combination Is the Real Story
What makes Agent Framework interesting isn’t just the consolidation. It’s that Agent Framework ships with both A2A and MCP support natively.
A2A lets agents talk to each other using a standardized protocol (Google’s open A2A spec). MCP lets agents talk to tools and data sources using Anthropic’s standard. Together, they mean an Agent Framework-built agent can:
- Orchestrate sub-agents using A2A
- Access Claude Code, databases, APIs via MCP
- Interoperate with non-Microsoft agents across the ecosystem
This is the first Microsoft-official SDK designed for the heterogeneous, multi-vendor agent world that actually exists in 2026.
What Developers Should Do
If you’re on .NET: This is now your official path for production agent work. The Semantic Kernel migration guide exists; start planning it.
If you’re on Python: The Python SDK is at parity with .NET for core features. Agent Framework is a cleaner API surface than AutoGen for most production use cases.
If you’re still on AutoGen: Microsoft is maintaining it for security patches only. Not urgent, but plan the migration before 2027.
If you’re evaluating: Compare with LangGraph and Claude SDK. Agent Framework wins on ecosystem integration (Azure, GitHub Copilot, M365) and enterprise auth. The others win on flexibility and community tooling.
What This Doesn’t Solve
Agent Framework is opinionated about Microsoft infrastructure. If your stack is AWS or GCP, you’ll fight the grain. The Azure-first assumptions are baked in, not optional.
Also: 1.0 means production-ready, not mature. The API surface is stable but the ecosystem of third-party extensions is thin compared to LangChain. Expect gaps.
Sources: Visual Studio Magazine · Microsoft DevBlogs