Multi-agents in action with 3 AI agents, 3 frameworks, tools & models | DEM312

Vini Soto and Jan Kalis demonstrate an “agentic content factory” that chains multiple AI agents and frameworks to research topics, generate articles and code samples, and iteratively refine output with minimal manual intervention.

Overview

In this Microsoft Build 2026 demo session (DEM312), the presenters build an autonomous multi-agent system using three different agent frameworks and deploy the agents to Azure Container Apps. The session also highlights sandboxing and security considerations (especially around API keys) and connects Microsoft Foundry (Azure AI Foundry) for end-to-end observability and evaluations.

What gets built

• An “Agentic Startup Content Factory” that:
  • Researches topics
  • Writes articles
  • Produces code samples
  • Refines its own output
  • Runs autonomously (goal: zero manual steps)

Agent frameworks and components used

• LangGraph agents
• .NET Microsoft Agent Framework agents
• GitHub Copilot SDK agents

Deployment target

• Azure Container Apps

Observability and evaluation

• Microsoft Foundry (Azure AI Foundry) is used for:
  • Observability
  • Evaluations (evals)

Security and sandboxing topics called out

• Azure Container App Sandboxes (Private Preview)
• Risks of placing API keys inside a sandboxed environment
• Egress transform capability to control/secure outbound calls
• Configuring sandbox secrets and an Azure AI API key

Session resources

• https://aka.ms/build26/DEM312

Chapters (from the video)

• 0:00 - Agenda: Modern Agentic Infrastructure and Demo Plan
• 00:02:49 - Launch of Azure Container App Sandboxes (Private Preview)
• 00:06:19 - Introduction to the demo and GitHub QR code shared
• 00:11:04 - Walkthrough of Azure Sandboxes interface showing live agent example
• 00:13:20 - Discussion on API key security risks inside sandbox
• 00:15:57 - Explanation of egress transform feature for secure outbound calls
• 00:16:48 - Configuration of sandbox secret and Azure AI API key
• 00:19:45 - Summary of secure sandbox execution and end-to-end observability
• 00:21:09 - Closing remarks and instructions on starting with Azure Sandboxes