Microsoft is expanding support for Google’s open AI agent interoperability protocol with the upcoming integration of Agent2Agent (A2A) in Azure AI Foundry and Copilot Studio. This move enables AI agents to collaborate across platforms, clouds, and organisations.
The company said the A2A protocol enables “structured agent communication—exchanging goals, managing state, invoking actions, and returning results securely and observably”.
“Open protocols like A2A and MCP are key to enabling the agentic web. With A2A support coming to Copilot Studio and Foundry, customers can build agentic systems that interoperate by design,” Microsoft CEO Satya Nadella said.
The protocol supports popular tools such as Semantic Kernel and LangChain, and routes all communications through Microsoft’s enterprise safeguards, including Entra, mutual TLS, Azure AI Content Safety, and full audit logging.
“With support for A2A, Azure AI Foundry customers can build complex, multi-agent workflows that span internal copilots, partner tools, and production infrastructure—while maintaining governance and SLAs (Service Level Agreements),” the company said in a blog post. “Copilot Studio agents will be able to securely invoke external agents, including those built with other platforms or hosted outside Microsoft.”
Microsoft said that over 10,000 organisations have already adopted its Agent Service in the past four months. At least 2.3 lakh organisations have used Copilot Studio, including 90% of the Fortune 500.
“As customers scale these systems, interoperability is no longer optional. They want their agents to orchestrate tasks that span vendors, clouds, and data silos,” the company wrote. “They want control, visibility, and trust—without being locked in.”
Microsoft has joined the A2A working group on GitHub and plans to contribute to the protocol’s specification and tooling. A public preview of A2A support in Foundry and Copilot Studio is expected soon.
“We’re laying the foundation for the next generation of software—collaborative, observable, and adaptive by design,” the company said. “The best agents won’t live in one app or cloud; they’ll operate in the flow of work, spanning models, domains, and ecosystems.”
The company sees this development as part of a larger trend in what it calls “agentic computing”, which it says marks a fundamental change in how software is developed and deployed.
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