Multi agent orchestration ADR

[TaoChenOSU]

Motivation and Context

Multi-agent orchestration ADR. Includes the following orchestrations:

• Concurrent
• Sequential
• Group Chat
• Magentic One
• Handoff

Description

An ADR for multi-agent orchestration in Semantic Kernel.

.Net PR: #11542
Python PR: #11993

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[eavanvalkenburg]

I currently don't see the need for Orchestration-type level abstractions, I think it could be much simpler, for me the key thing we need to do is enable Agents, Orchestration and Human-in-the-Loop to all have the same abstractions so that you can endlessly combine them in ways that make sense, and that would mean that each in- and output can be multiple, so that you can do the concurrent pattern but other then that we should strive for a simple setup, and this might be python specific, dotnet might need more defined subclasses of Orchestration...

[TaoChenOSU]

I currently don't see the need for Orchestration-type level abstractions, I think it could be much simpler, for me the key thing we need to do is enable Agents, Orchestration and Human-in-the-Loop to all have the same abstractions so that you can endlessly combine them in ways that make sense, and that would mean that each in- and output can be multiple, so that you can do the concurrent pattern but other then that we should strive for a simple setup, and this might be python specific, dotnet might need more defined subclasses of Orchestration...

You're right. This is not Python only. We are considering the overall design by listing the building blocks necessary to accomplish multi-agent orchestration using SK agents and the shared runtime.

[moonbox3]

Really great to see how this doc has evolved over several iterations into what it is now - awesome work.