Azure OpenAI & Foundry
The Microsoft hosted path. Foundry SDKs reached 2.0 in April 2026, consolidating around AIProjectClient. This subsection covers the SDKs, the agent service, and the OpenAI-compatible endpoint story (so .NET clients can switch providers with config changes).
Topics (canonical order)
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April 2026 release, what changed, package layout
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The unified entry point, connections, deployments, evals
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Managed agent runtime, connected agents, when to use vs self-hosted Agent Framework
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Pointing OpenAI .NET SDK at Azure / Ollama / vLLM / LM Studio
Cross-references
- Connectivity guidance in Connecting to Each from .NET.
- Auth / managed identity in Azure Key Vault & Managed Identity.