Claude Code
Fan-Out/Fan-In
An agent orchestration pattern where a coordinator splits work into parallel sub-tasks (fan-out), distributes them to multiple agents, waits for all results, and then combines them into a single output (fan-in).
In depth
An agent orchestration pattern where a coordinator splits work into parallel sub-tasks (fan-out), distributes them to multiple agents, waits for all results, and then combines them into a single output (fan-in). This pattern maximizes throughput for tasks with independent sub-problems. Claude Code uses fan-out/fan-in when spawning sub-agents for parallel research, coding, and testing tasks.
Example
In practice, developers reach for Fan-Out/Fan-In when they need the capability described above as part of an AI feature or workflow.
Go deeper at Developers Digest
Hands-on guides, comparisons, and tutorials that cover Claude Code.
FAQ
What is Fan-Out/Fan-In?
An agent orchestration pattern where a coordinator splits work into parallel sub-tasks (fan-out), distributes them to multiple agents, waits for all results, and then combines them into a single output (fan-in).
Why does Fan-Out/Fan-In matter for AI developers?
Fan-Out/Fan-In sits in the Claude Code part of the AI stack. Understanding it helps you make better decisions when building, debugging, and shipping AI features.
Where can I learn more about Fan-Out/Fan-In?
Developers Digest publishes tutorials and videos that cover Claude Code topics including Fan-Out/Fan-In. Check the blog and YouTube channel for hands-on walkthroughs.
Related terms
Claude Code
Orchestrator-Worker Pattern
A multi-agent architecture where a central orchestrator agent receives a task, decomposes it into sub-tasks, assigns each to a specialized worker agent, monitors progress, and synthesizes results.
Claude Code
Delegation Pattern
A multi-agent architecture where a manager agent breaks a task into sub-tasks and assigns each one to a specialized worker agent.
Claude Code
Sub-Agents
Lightweight AI agents spawned by a parent agent to handle a specific sub-task in parallel.
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