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Platform Architecture Overview

🏭 What Is Microsoft Foundry? 7 min 50 BASE XP

The Foundry Architecture

Microsoft Foundry is a unified Platform-as-a-Service (PaaS) that brings together models, tools, data, agents, and governance under a single Azure resource provider (Microsoft.CognitiveServices).

Core Platform Layers

LayerPurposeExamples
ModelsAI model catalog and deploymentGPT-4o, Llama 3, Mistral, Phi, Cohere
ToolsPre-built AI capabilities (formerly Cognitive Services)Vision, Speech, Document Intelligence, Translator
Data & GroundingConnect models to your dataAzure AI Search indexes, file uploads, databases
AgentsBuild and manage autonomous AI agentsAgent Service, Connected Agents, Multi-Agent Workflows
EvaluationMeasure quality, safety, and groundednessBuilt-in evaluators, adversarial simulation
GovernanceSecurity, compliance, and monitoringRBAC, content filters, tracing, Azure Policy

Resource Hierarchy

Azure Subscription
  └── Resource Group
       └── Foundry Resource (Hub)
            ├── Project A (team workspace)
            │    ├── Model Deployments
            │    ├── Agents
            │    ├── Search Indexes
            │    └── Evaluations
            └── Project B (another team)
                 └── ...
💡 Key Insight: The Hub is the organizational container that centralizes governance (RBAC, networking, policies). Projects are isolated workspaces where teams actually build. Projects inherit security settings from their parent Hub.
FOUNDRY VERIFICATION
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Under which Azure resource provider does Microsoft Foundry operate?
Microsoft.MachineLearning
Microsoft.CognitiveServices
Microsoft.OpenAI
Microsoft.AIFoundry
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Platform Architecture Overview | What Is Microsoft Foundry? — Azure Foundry Academy