Workflow Builder

Workflow Builder enables multi-agent orchestration by creating a supervisor agent that delegates work to specialized Agent Builder agents. Each workflow consists of:

• Supervisor Agent: The entrypoint agent that receives user requests and coordinates specialized agents

• Specialized Agents: Agent Builder use cases that the supervisor can delegate tasks to

• Agents as Tools Pattern: The supervisor registers each Agent Builder agent as a tool and autonomously selects which agents to use

Feature	Agent Builder	Workflow Builder
Purpose	Build and deploy single custom agents	Orchestrate multiple Agent Builder agents
Agent Type	Single agent with MCP tools	Supervisor agent + multiple Agent Builder agents
Tool Integration	MCP servers and Strands tools	Agent Builder agents registered as tools
Delegation	Direct tool invocation	Autonomous agent selection and delegation
Complexity	Single-agent tasks	Multi-step, multi-agent workflows
Agent Reuse	N/A	Reuses existing Agent Builder deployments
Best for	Focused, single-domain tasks	Complex workflows requiring multiple specializations

Note

• Workflows require at least 1 Agent Builder use case as a specialized agent agent

• All specialized agents must be Agent Builder use cases deployed in GAAB