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As with VS Code, Microsoft Foundry Meets Claude on Its Own Terms

• By David Ramel
• 08/17/2026

Microsoft is extending its embrace of Anthropic's Claude on multiple levels, including Visual Studio Code, this time bringing more of Claude's own agentic ecosystem directly into Microsoft Foundry.

In an Aug. 17 announcement, Microsoft said five Claude capabilities are now available for deployments hosted on Azure: Structured Outputs, Web Search, Web Fetch, Model Context Protocol (MCP) Connector and Tool Search.

Claude became generally available in Microsoft Foundry in June, with Microsoft describing it as native to Foundry and supporting Anthropic's Messages API, prompt caching, extended thinking and tool streaming. The new capabilities further extend that approach, letting developers use more of Claude's own agent tooling while keeping their Claude deployment within the Azure environment.

That approach has a familiar look. Visual Studio Magazine has been tracking similar accommodation in VS Code, where Claude has increasingly become more than another model choice.

In May, VSM's "Special Embrace? VS Code Adapts to Claude Code's Ecosystem" examined VS Code support for Claude-specific artifacts including CLAUDE.md files, .claude rules, agents, skills, hooks and plugin conventions. Subsequent VS Code releases have continued the trend with Claude-specific agent-session and permission features.

The expanding Claude accommodation also comes amid a broader change in Microsoft's AI relationships. The company remains closely tied to OpenAI, but Microsoft itself now describes Microsoft 365 Copilot as "model diverse by design," while its November 2025 strategic partnership with Anthropic included an investment of up to $5 billion from Microsoft, a $30 billion Azure compute commitment from Anthropic and a promise that Azure customers would gain access to "Claude-specific capabilities."

Analysts and industry commentators have repeatedly viewed those moves in the context of Microsoft reducing its once-heavy dependence on OpenAI and spreading its AI bets among Anthropic, its own models and other providers. D.A. Davidson analyst Gil Luria, for example, said the Anthropic partnership was chiefly about reducing the AI ecosystem's reliance on OpenAI, while KeyBanc Capital analyst Jackson Ader recently pointed to Microsoft's Anthropic partnership and homegrown models as evidence that it isn't completely dependent on OpenAI.

Computerworld contributing editor Preston Gralla made the point more directly in a January opinion column, "Will the Microsoft-Anthropic deal leave OpenAI out in the cold?" After reviewing Microsoft's changing OpenAI relationship and its growing Anthropic commitments, Gralla wrote: "Microsoft's deals with Anthropic make it clear that Microsoft believes its AI future is not solely tied to OpenAI." He concluded that Microsoft was looking elsewhere for help, with Anthropic currently filling that role.

Claude Beyond VS Code
The Foundry work isn't the only evidence of Claude receiving first-class accommodation across Microsoft's broader software portfolio:

• GitHub Copilot coding agent: When Claude Sonnet 4.5 reached general availability in GitHub Copilot in October 2025, GitHub made it the model used by Copilot coding agent across subscription types, independent of the model users selected for Copilot Chat.
• GitHub Agent HQ: Claude has become a partner coding agent alongside GitHub Copilot and OpenAI Codex, able to work on issues and pull requests and operate through GitHub and VS Code.
• Microsoft 365 Copilot: Microsoft says its Copilot strategy is deliberately multi-model and now uses both OpenAI and Anthropic models. Claude is available in mainline Copilot chat through the Frontier program.
• Copilot Cowork: Microsoft said the research-preview product was built "in close collaboration with Anthropic" and incorporates technology that powers Claude Cowork.
• Microsoft Foundry partnership: Microsoft explicitly promised Azure customers access to "Claude-specific capabilities" when it announced its expanded Anthropic relationship last November -- language that looks particularly relevant in light of the five capabilities announced this week.

None of that means Microsoft has simply exchanged an OpenAI-first strategy for an Anthropic-first one. Microsoft continues to work closely with OpenAI, is building its own MAI models and increasingly portrays its AI portfolio as deliberately model-diverse.

But the latest Foundry additions provide another example of Microsoft doing more than putting Claude in a model catalog. As with VS Code, Microsoft is adapting its own platform so developers can use Claude-specific interfaces, conventions and capabilities without leaving the Microsoft environment.