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Microsoft Foundry & Foundry Agent Service Development

We build on Microsoft Foundry: choosing and deploying models, creating agents in Foundry Agent Service, running Microsoft Agent Framework code as hosted agents, and evaluating and tracing them before and after release.

What is Microsoft Foundry?

Microsoft Foundry, formerly Azure AI Foundry, is Microsoft’s AI platform on Azure, which it describes as bringing agents, models and tools together under a single management grouping.

It covers a model catalogue (Foundry Models), Foundry Agent Service (formerly Azure AI Agent Service) for building and running agents, Foundry IQ for knowledge, and the evaluation, tracing and guardrails around them.

The new Foundry portal at ai.azure.com has been generally available since 16 March 2026 for core scenarios in Foundry projects, and Microsoft lists some capabilities as still in preview. Hub-based projects and standalone Azure OpenAI resources are available only in the older portal, now called Foundry (classic).

What we build on Foundry

Choosing and deploying models

We test candidate models from the Foundry Models catalogue on your own tasks and deploy the ones that fit. Non-Microsoft models include Anthropic’s Claude, available through an Azure Marketplace subscription: Anthropic sells and operates it and provides any SLA, and Foundry doesn’t apply its built-in content filtering to Claude at deployment, so we add our own checks.

Agents on Foundry Agent Service

We build prompt agents with the tools Microsoft lists as generally available in Foundry Agent Service, including MCP, OpenAPI, function calling, file search, code interpreter, web search and Azure AI Search. We flag preview tools, such as SharePoint grounding, before you rely on them.

Hosted agents for your own code

Hosted agents run your Python or C# agent code as a Foundry-managed service, with a managed endpoint, automatic scaling and a dedicated Microsoft Entra agent identity. Microsoft made them generally available in July 2026. The code can use Microsoft Agent Framework, LangGraph or another framework; we write ours with Agent Framework, whose Foundry hosting packages are still prerelease.

Knowledge with Foundry IQ

Foundry IQ is Foundry’s knowledge layer: permission-aware knowledge bases on Azure AI Search, with agentic retrieval, shareable across agents. Microsoft lists it as generally available at the API level, with portal access still in preview. We prepare and index the content behind it.

Custom AI on your own data

Evaluation and tracing

We run Foundry evaluations against your real questions before each release; Microsoft lists evaluations as generally available, with some evaluators in preview. Agent tracing follows OpenTelemetry conventions and stores traces in Azure Monitor Application Insights; it is generally available for prompt and hosted agents and in preview for workflow and external agents.

Agents in Teams and Microsoft 365 Copilot

Publishing Foundry agents to Microsoft 365 Copilot and Microsoft Teams is generally available, with documented limits such as no streaming responses or citations. When you need a fully customised agent there, we build it with the Microsoft 365 Agents SDK or Teams SDK.

Moving off classic agents and the Assistants API

The next-generation Foundry Agent Service, built on the Responses API, became generally available on 16 March 2026. Microsoft calls the agents that came before it classic agents.

Retirement dates published by Microsoft, as of October 2026
Service or featureRetirementWhere Microsoft points you
Classic agentsDeprecated; scheduled to retire on 31 March 2027The new Foundry Agent Service
Azure OpenAI Assistants APIRetired; its documented sunset date was 26 August 2026Foundry Agent Service
Hosted agents deployed during the previewThe original hosting backend was supported only until 20 August 2026Redeploy on the new hosting backend
Foundry declarative workflows (preview)Scheduled to retire on 1 December 2026Microsoft Agent Framework, run as a hosted agent
Prompt flowScheduled to retire on 20 April 2027Agent Framework

Microsoft’s guide to migrating to the new Foundry Agent Service (opens in a new tab) covers classic agents and Assistants API code. Its migration tool helps automate Assistants API code changes but doesn’t move past threads or messages. Declarative workflows have their own workflow migration guide (opens in a new tab), and their retirement doesn’t affect code-based orchestration in hosted agents.

  1. Take stock

    We list every classic agent, Assistants API integration and tool, and what depends on them.

  2. Map and rebuild

    Following Microsoft’s mapping, threads become conversations, runs become responses and create_agent() becomes create_version(). Declarative workflows and Prompt flow logic become Agent Framework workflows in code.

  3. Test side by side, then switch

    We test each migrated agent against real conversations, alongside the original while it still runs, and switch over once it passes.

Security and governance

  • Microsoft Entra agent identities: Foundry gives new agents their own identity by default, and hosted agents a dedicated one at deployment; we give each only the access its tools need. Entra Agent ID is generally available, and Microsoft states that extending Microsoft Entra security features to agents requires Microsoft Agent 365.
  • Private networking for Foundry Agent Service, generally available since March 2026: your own virtual network, private endpoints and no public egress. Microsoft documents limits: traces and workflow agents don’t yet fully support network isolation; Grounding with Bing, web search and SharePoint grounding use public endpoints; hosted agents need virtual network injection set up when the Foundry account is created; and Microsoft’s deployment guide says a hosted agent’s endpoint stays publicly addressable, with each user’s sessions isolated by identity.
  • Foundry guardrails (formerly content filters) use Azure AI Content Safety classifiers and cover models sold by Azure and agents built in Foundry Agent Service. They are generally available for model deployments and in preview for agents, including checks on tool calls and tool responses.
  • Role-based access through Foundry’s built-in roles, such as Foundry User and Foundry Owner (the renamed Azure AI roles, with unchanged IDs and permissions). We give each person and service the narrowest role that works.

Foundry and Agent Framework together

Microsoft Agent Framework is Microsoft’s open-source SDK for building agents and multi-agent workflows in .NET and Python. Foundry Agent Service is Microsoft’s managed platform for building, deploying and scaling agents. Microsoft Learn calls Agent Framework “the recommended orchestration layer for Hosted agents in Foundry”.

We use them together in two ways: an Agent Framework app deployed as a hosted agent, or one in your own environment that connects to agents defined in Foundry. Neither requires the other: hosted agents run other frameworks, and Agent Framework runs outside Foundry too.

Agent Framework’s Microsoft Foundry connector is stable in Python but still prerelease in .NET. Our Microsoft Agent Framework development page covers its connectors and hosting options.

How we work and what it costs

  1. Discovery call

    A free call about your goals and Azure setup. If Copilot Studio, Microsoft’s low-code option, would do the job, we say so.

  2. Pilot

    A small pilot in your own Azure subscription, with agreed success criteria.

  3. Production build

    We set up identities, networking, guardrails, evaluations and tracing before go-live.

  4. Handover and support

    Code and documentation for your team, then support Monday to Friday, 9 AM to 6 PM IST.

Foundry usage is billed to your Azure subscription, separately from our fees. Hosted agents are billed for the CPU and memory used during active sessions, on top of model inference and tool usage.

Consulting
From ₹2,500 (US$40) an hour
Monthly retainer
From ₹2,00,000 (US$4,000) a month
Pilots and fixed-scope projects
Quoted per statement of work

GST is added to Indian invoices. Rate cards by business size and add-ons are on our pricing page.

Frequently Asked Questions

Is Microsoft Foundry the same as Azure AI Foundry?

Yes. Microsoft Foundry is the current name of the platform formerly called Azure AI Foundry, and before that Azure AI Studio. Microsoft introduced the new name at Microsoft Ignite in November 2025; the old name still appears in older links and documents.

Do we need Foundry to use Agent Framework?

No. Microsoft Agent Framework is open source and runs in your own application or container, on Azure or your own servers. We pair it with Foundry hosted agents when you want a managed runtime.

What happens to our classic agents?

Microsoft has deprecated classic agents and scheduled them to retire on 31 March 2027; its migration guide covers moving them to the new Foundry Agent Service. We migrate one agent at a time, testing each against its current behaviour before switching over.

Can Foundry agents appear in Teams and Microsoft 365 Copilot?

Yes. Microsoft lists publishing Foundry agents to Microsoft 365 Copilot and Microsoft Teams as generally available. Its documentation lists limitations, including that published agents don’t support streaming responses or citations, so we check them against your requirements first.

Which models can we use?

Microsoft’s Foundry Models catalogue includes models from Microsoft, Azure OpenAI, Anthropic, DeepSeek, Meta, Mistral, Cohere and others; Claude models come through an Azure Marketplace subscription, sold and operated by Anthropic. We help you choose by testing candidates on your own tasks.

How is Foundry billed?

Through your own Azure subscription, separately from our fees. Hosted agents are billed for the CPU and memory used during active sessions, on top of model inference and tool usage; Microsoft’s Foundry Agent Service pricing page lists current rates.

What does your work cost?

Consulting starts at ₹2,500 (US$40) an hour and monthly retainers at ₹2,00,000 (US$4,000); pilots and fixed-scope projects are quoted per statement of work after a free discovery call.
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