Add workflow orchestration

Author: luisquintanilla

docs/ai/conceptual/agents.md

@@ -34,14 +34,79 @@ Imagine you're launching a new feature on your business website. If it's a simpl
 - Testing
 - Deployment
 
-## Agents + Workflows
+### Agents + Workflows
 
 Workflows don’t require agents, but agents can supercharge them.
 
 When agents are equipped with reasoning, tools, and context, they can optimize workflows.
 
 This is the foundation of multi-agent systems, where agents collaborate within workflows to achieve complex goals.
 
+### Workflow orchestration
+
+Agentic workflows can be orchestrated in a variety of ways. The following are a few of the most common.
+
+#### Sequential
+
+Agents process tasks one after another, passing results forward.
+
+```mermaid
+graph TD
+    A[Agent A] --> B[Agent B]
+    B --> C[Agent C]
+    C --> D[Final Output]
+```
+
+#### Concurrent
+
+Agents work in parallel, each handling different aspects of the task.
+
+```mermaid
+graph TD
+    A[Task Input] --> B1[Agent A]
+    A --> B2[Agent B]
+    A --> B3[Agent C]
+    B1 --> C[Aggregate Results]
+    B2 --> C
+    B3 --> C
+    C --> D[Final Output]
+```
+
+#### Handoff
+
+Responsibility shifts from one agent to another based on conditions or outcomes.
+
+```mermaid
+graph TD
+    A[Start Task] --> B{Agent A Decision}
+    B -- Success --> C[Agent A Continues]
+    B -- Needs Help --> D[Agent B Takes Over]
+    D --> E{Agent B Decision}
+    E -- Escalate --> F[Agent C Takes Over]
+    E -- Complete --> G[Agent B Completes Task]
+    C --> H[Final Output]
+    F --> H
+    G --> H
+```
+
+#### Group Chat
+
+Agents collaborate in a shared conversation, exchanging insights in real-time.
+
+```mermaid
+sequenceDiagram
+    participant User
+    participant AgentA
+    participant AgentB
+    participant AgentC
+
+    User->>GroupChat: Start Task Discussion
+    AgentA->>GroupChat: Shares initial analysis
+    AgentB->>GroupChat: Adds additional context
+    AgentC->>GroupChat: Suggests strategy
+    GroupChat->>User: Final Collaborative Output
+```
+
 ## How can I get started building agents in .NET?
 
 The building blocks in Microsoft.Extensions.AI as well as Microsoft.Extensions.VectorData provide you with the foundations for agents by providing modular components for AI models, tools, and data.